Log In Registration
Ask an expert
Mathematics
30.08.2021 15:11
107
387
7
Solved by an expert

Expan and simplify the following expression: 3(2a + 3)(2a - 1) - 4 (a^2 - 7)

Expan and simplify the following expression:
3(2a + 3)(2a - 1) - 4 (a^2 - 7)
Show Answers
kaitlksndj
kaitlksndj
4,9(67 marks)
= 3(4a^2 + 4a - 3) - 4a^2 + 28
= 12a^2 + 12a - 9 - 4a^2 + 28
= 8a^2 + 12a + 19
= 4a(2a + 3) + 19
SL10355
SL10355
4,4(76 marks)
The answer is A, 51.

Popular Questions about the subject: Mathematics

Consider some 4-sided dice. roll two of these dice. let x be...
Consider some 4-sided dice. roll two of these dice. let x be the minimum of the two values that appear. let y denote the maximum. let a j be the event containing...
Mathematics
09.08.2021 14:58
Pat bought 5 pounds of apples. how many pounds of pears could...
Pat bought 5 pounds of apples. how many pounds of pears could pat have bought for the same amount of money? (1) one pound of pears costs $0.50 more than one pound...
Mathematics
22.11.2021 22:08
Arectangle is constructed with its base on the diameter of a...
Arectangle is constructed with its base on the diameter of a semicircle with radius 23 and with its two other vertices on the semicircle. what are the dimensions...
Mathematics
19.02.2022 15:12
Agroup of friends decided to divide the $800 cost of a trip equally...
Agroup of friends decided to divide the $800 cost of a trip equally among themselves. when two of the friends decided not to go on the trip, those remaining still...
Mathematics
16.07.2022 23:00
Construct a 95% confidence interval for the population mean,...
Construct a 95% confidence interval for the population mean, μ. assume the population has a normal distribution. a random sample of 16 lithium batteries has a...
Mathematics
22.11.2020 19:20
An epidemiologist wants to estimate the proportion of residents...
An epidemiologist wants to estimate the proportion of residents in her city that carry the hepatitis a virus. it is thought that the proportion is approximately...
Mathematics
17.10.2020 05:10
Your college roommate receives a pay raise at her part-time job...
Your college roommate receives a pay raise at her part-time job from $9 to $11 per hour. she used to work 25 hours per week, but now she decides to work 20 hours...
Mathematics
10.11.2020 16:48
1. sandra and jerry hampton built a deck in the shape of a regular...
1. sandra and jerry hampton built a deck in the shape of a regular hexagon off the back of their new home. the sides of the hexagon are 14 feet long. the couple...
Mathematics
15.08.2020 20:35
What is the value of x? \50 1000...
What is the value of x? \50 1000...
Mathematics
06.07.2021 08:41
Factor this expression x^2+9x+20. show your work...
Factor this expression x^2+9x+20. show your work...
Mathematics
28.04.2021 13:20

New questions by subject

How many atoms of each element are in the chemical formula P2O5?...
How many atoms of each element are in the chemical formula P2O5? 2 phosphorus and 5 oxygen 5 phosphorus and 2 oxygen 1 phosphorus and 5 oxygen 2 phosphorus and...
Chemistry
23.11.2021 20:17
Which statements provide evidence for the affirmative claim?...
Which statements provide evidence for the affirmative claim? Check all that apply Most four-year colleges and universities in the United States require students...
English
04.04.2022 11:52
Which of the following is true about society in Mohenjo-Daro?...
Which of the following is true about society in Mohenjo-Daro? a There were strict social divisions in society b Religion was focused on one major god, Shiva c...
History
05.08.2020 14:38
A summary of chapter 1 in the Summer of the Mariposas...
A summary of chapter 1 in the Summer of the Mariposas...
English
24.02.2023 22:01
Identify the shaded area labeled D in the structure on the right...
Identify the shaded area labeled D in the structure on the right A. Sugar B. Nucleotide C.Phosphate D. Base...
Biology
17.04.2021 09:15
A mercury thermometer records a temperature of 8 degrees Fahrenheit...
A mercury thermometer records a temperature of 8 degrees Fahrenheit 10 A.M. If the temperature drops by 3 degrees Fahrenheit every hour, what will be the temperature...
Mathematics
21.03.2023 03:30
Please give answers due at 8:00 pst...
Please give answers due at 8:00 pst...
Mathematics
07.10.2020 08:06
Jenny’s favorite store pays $45 for a new type of spring dress....
Jenny’s favorite store pays $45 for a new type of spring dress. The store’s percent of markup is 75%. After the markup, how much will Jenny have to pay for the...
Mathematics
31.12.2022 14:08
1. Is the rate of population growth constant or variable?...
1. Is the rate of population growth constant or variable?...
Biology
02.02.2021 06:10
What is the most coming job for people in the US & Canada...
What is the most coming job for people in the US & Canada...
Chemistry
14.09.2020 18:34
Find out answers to questions
from an AI-bot
Get full access
Answers
Themes
Family and Home Sport Other Dating, Love, Relationships Health and Medicine Science and Technology Cities and Countries Travel and tourism Food and Cooking Philosophy Style and Beauty Animals and plants Business and Finance Construction and repair Leisure and Entertainment Legal consultation Goods and services Society and Politics Photography and Videography Auto and Moto Art and Culture Computers and Internet Horoscopes, Magic, Divination Work and Career Business Law Spanish SAT Engineering Social Studies Computers and Technology World Languages Mathematics French Biology Arts History Geography Health Chemistry Medicine Physics English Advanced Placement (AP) German
#
#
#
#
# #

We expand our knowledge with many expert answers

Answers