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Find f(-2) if f(x)= x^2 + 8x

Sagot :

SenorMathWiz

Answer:

f(-2) = -12

Step-by-step explanation:

f(x)= x² + 8x

We want to find f(-2)

f(-2) = (-2)² + 8(-2)

Apply exponent : (-2)² = 4

f(-2) = 4 + 8(-2)

multiply 8 and - 2 : 8 * -2 = -16

f(-2) = 4 - 16

subtract 16 from 4 : 4 - 16 = -12

f(-2) = -12

HayabusaBrainly

Step-by-step explanation:

  • f(x) = x² + 8x

f(-2) = (-2)² + 8(-2) = 4 - 16 = -12

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