find the value of the expression X^3 + 5X^2 + 6X - 2 when X=-2
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Answer:
-2
Step-by-step explanation:
X^3+5X^2+6X-2
=(-2)^3+5(-2)^2+6(-2)-2
=-8+5×4-12-2
=-8+20-12-2
=20-8-12-2
=20-22
=-2
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