Mathematics
20.03.2020 17:30
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Explain how to find the value of z if you know that 100x*2 + 120x + z is a perfect
Explain how to find the value of z if you know that 100x*2 + 120x + z is a perfect square trinomial
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ItzAquaZ8716
4,8(50 marks)
Divide the value of "b" by 2 and then square it.
(b / 2)²
= (120 / 2)²
= (60)²
= 3600
Therefore the value of z is 3600. That's at least what I believe lol
(b / 2)²
= (120 / 2)²
= (60)²
= 3600
Therefore the value of z is 3600. That's at least what I believe lol
jamesnoro
4,8(59 marks)
For perfect trinomial, determinant is zero.
Comparing given equation with general quadratic equation ax²+bx+c,
a=100, b=120, c=z
Δ=b²-4ac = 0
120²-4(100)(z) = 0
z=120²/4(100) = 36
Therefore, the required trinomial is,
100x²+120x+36
Comparing given equation with general quadratic equation ax²+bx+c,
a=100, b=120, c=z
Δ=b²-4ac = 0
120²-4(100)(z) = 0
z=120²/4(100) = 36
Therefore, the required trinomial is,
100x²+120x+36
shaylawaldo11
4,4(52 marks)
2 7/10
Step-by-step explanation:
3/4 + (- 2/5) +(6/3) = 2 7/10
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