f (x) - 2 x squared - 3x + 4
find f (-1)
2007-04-29 16:32:45 · 6 answers · asked by awwily 1 in Science & Mathematics ➔ Mathematics
Is it f(x) = 2x^2 - 3x + 4 ?
2(-1)^2 - 3(-1) + 4
2 + 3 + 4
9
2007-04-29 16:38:50 · answer #1 · answered by TychaBrahe 7 · 0⤊ 0⤋
If you meant f(X) = 2x^2 -3x +4 , then replace the x's in the function by (-1)'s to get the answer. Take note of what (-1)^2 becomes..
2007-04-29 16:37:08 · answer #2 · answered by TheMPower 2 · 0⤊ 0⤋
f(x) = 2x^2 - 3x + 4
f(-1) = 2(-1)^2 - 3(-1) + 4
= 2(1) + 3 + 4
= 2 + 3 + 4
= 9
2007-04-29 16:39:39 · answer #3 · answered by QiQi 3 · 0⤊ 0⤋
its 9
2007-04-29 16:46:22 · answer #4 · answered by Anonymous · 0⤊ 0⤋
if by this you mean
f(x) = -2x^2 - 3x + 4
f(-1) = -2(-1)^2 - 3(-1) + 4
f(-1) = -2(1) + 3 + 4
f(-1) = -2 + 7
f(-1) = 5
unless you mean
f(x) = 2x^2 - 3x + 4
f(-1) = 2(-1)^2 - 3(-1) + 4
f(-1) = 2(1) + 3 + 4
f(-1) = 2 + 7
f(-1) = 9
2007-04-29 16:46:48 · answer #5 · answered by Sherman81 6 · 0⤊ 0⤋
Sorry! Can't help you there although i wish i could. Math is my worst sbject. Good Luck tho!!! =)
2007-04-29 16:38:13 · answer #6 · answered by Anonymous · 0⤊ 1⤋