robertfreedman987 robertfreedman987

10-09-2020
Mathematics

contestada

If h(x)=-3x^2-6x, find x when h(x)=-72.

Respuesta :

samkr14 samkr14

10-09-2020

Answer:

x = 6, -4

Step-by-step explanation:

3x²-6x = -72
3x² - 6x +72 =0
3(x²-2x+24) =0
x²-2x+24=0
(x-6)(x+4)=0
x= 6, -4

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