ledaiminh4061 ledaiminh4061

07-06-2018
Mathematics

contestada

1. Factor. 4x2 + 20x

2. Find the solution to the following equation by transforming it into a perfect square trinomial.

x2 – 12x = 64

Respuesta :

asadoujohn asadoujohn

07-06-2018

1.
4x^2 + 20x
= 4x(x + 5)

2.
x^2 - 12x = 64
x^2 - 12x - 64 = 0
(x - 16)(x + 4) = 0
x - 16 = 0 or x + 4 = 0
x = 16 or x = -4
x = {-4, 16}

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