# Evaluate 5

Evaluate expression x2−7x+12x−4 when x=−1

Result

a =  -8

#### Solution:

$x = -1 \ \\ a = x^2-7 \cdot \ x+12 \cdot \ x-4 = (-1)^2-7 \cdot \ (-1)+12 \cdot \ (-1)-4 = -8$

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Matematik
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