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zvonat [6]
4 years ago
11

If f(x) = -7x+5x^2+10, what does f(-2) equal?

Mathematics
2 answers:
Natalka [10]4 years ago
7 0

f(x) = -7x + 5x² + 10

f(-2) This means that x is -2, so you plug in -2 for "x" in the equation


f(x) = -7x + 5x² + 10

f(-2) = -7(-2) + 5(-2)² + 10

f(-2) = 14 + 5(4) + 10

f(-2) = 20 + 24

f(-2) = 44

Vikki [24]4 years ago
6 0

-7x+5x^2+10 f(-2)        given

-7(-2)+5(-2)^2+10         plug in -2 where you see X

14+5(4)+10                   do (-2)^2                

14+20+10                    multiply 5(4)

45                               add your numbers (this is the final)

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