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

User Simon Giles
by
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1 Answer

3 votes

Answer:

x = 6, -4

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
User Platon
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