ashleybealee ashleybealee
  • 22-12-2020
  • Mathematics
contestada

f(x)=3x2-15. find x if f(x)=-3

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kritika3375
kritika3375 kritika3375
  • 22-12-2020

Step-by-step explanation:

Given

f(x) = - 3

Now

f(x) = 3x² - 15

-3 = 3x² - 15

3x² = 15 - 3

3x² = 12

x² = 12/ 3

x² = 4

x = + 2

Therefore x = + 2.

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