Mathematics
17.05.2023 10:50
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What is the solution to the equation? 4 x squared − 3 equals 77 choose all answers

What is the solution to the equation?

4 x squared − 3 equals 77
choose all answers that are correct.

a.
5 square root of 2

b.
2 square root of 5

c.
− 2 square root of 5

d.
− 5 square root of 2
Show Answers
jo1720
jo1720
4,7(67 marks)
The answers are B. 2 square root of 5 and C. − 2 square root of 5.

4 x^{2} -3=77
4 x^{2} =77+3
4 x^{2} =80
x^{2} =80:4
x^{2} =20
x= \sqrt{20}
x= \sqrt{4*5}
x= \sqrt{4}* \sqrt{5}

Since √4 could be either -2 or +2, the solutions are:
x=2 \sqrt{5} or x=-2 \sqrt{5}
msitez5993
msitez5993
4,4(58 marks)

you have to add them then multiply them and then you have your answer

Step-by-step explanation:

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