robertfreedman987 robertfreedman987
  • 10-09-2020
  • Mathematics
contestada

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

Respuesta :

samkr14
samkr14 samkr14
  • 10-09-2020

Answer:

x = 6, -4

Step-by-step explanation:

  1. 3x²-6x = -72
  2. 3x² - 6x +72 =0
  3. 3(x²-2x+24) =0
  4. x²-2x+24=0
  5. (x-6)(x+4)=0
  6. x= 6, -4
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