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Simplify the following polynomial, then evaluate for x = -2 2x2 - 4x + 3x2 + x - 7

Simplify the following polynomial, then evaluate for x = -2 2x2 - 4x + 3x2 + x - 7
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1 vote
Simplify the following polynomial, then evaluate for x = -2

2x2 - 4x + 3x2 + x - 7

User Eosterberg
by
8.8k points

1 Answer

2 votes

Answer:


5x^2-3x-7,\,\,f(-2)=19

Explanation:


f(x)=2x^2-4x+3x^2+x-7\\f(x)=5x^2-3x-7\\f(-2)=5(-2)^2-3(-2)-7\\f(-2)=5(4)+6-7\\f(-2)=20-1\\f(-2)=19

User Jeppz
by
8.0k points
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