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

Question

Jamie Meadows

Mathematics

4 August, 01:32

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

+2

Answers (2)

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Alejandra Robinson · Answer 1

-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)

Blossom · Answer 2

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