Given f(x)=5x squared-3x+1, find f(-2).?

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2007-05-20 08:28:16 · 4 answers · asked by lindasalicea 1 in Science & Mathematics ➔ Mathematics

f(x) = 5x² - 3x + 1
f(-2) = 20 + 6 + 1
f(- 2) = 27

2007-05-20 08:47:31 · answer #1 · answered by Como 7 · 0⤊ 0⤋

5 * 4 + 3 * 2 + 1 = 27

2007-05-20 15:31:24 · answer #2 · answered by Anonymous · 0⤊ 0⤋

f(x) = 5x2 - 3x + 1

to find f(-2) just plug and play.

f(-2) = 5(-2)^2 - 3(-2) + 1
= 5(4) + 6 + 1
= 27

and that's the way ti goes.

2007-05-20 15:33:55 · answer #3 · answered by Anonymous · 0⤊ 0⤋

Just plug in -2 whereever you see an x.
f(-2) = 5[(-2)^2] -3(-2) +1
f(-2) = 5(4) + 6 + 1
f(-2) = 27

2007-05-20 15:34:25 · answer #4 · answered by screaming monk 6 · 0⤊ 0⤋