Answer:
f(x) = 8x³ + 8x² + 8x, x = -1
Substitute x as -1.
f(-1) = 8(-1)³ + 8(-1)² + 8(-1)
Evaluate the power.
f(-1) = 8(-1) + 8(1) + 8(-1)
Multiply.
f(-1) = -8 + 8 - 8
Subtract.
f(-1) = -8
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Answer:
f(x) = 8x³ + 8x² + 8x, x = -1
Substitute x as -1.
f(-1) = 8(-1)³ + 8(-1)² + 8(-1)
Evaluate the power.
f(-1) = 8(-1) + 8(1) + 8(-1)
Multiply.
f(-1) = -8 + 8 - 8
Subtract.
f(-1) = -8