find the value of x³-8x²+14x-7 when x = -1
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The answer is in the image i attached
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-30 is a answer
Step-by-step explanation:
(-1)³ -8(-1)² +14(-1) -7
= -1 -8(-1) +14-7
= -1-8-14-7
= -9 - 14 -7
= -9-21
= -30
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