f(x) = 4x(superscript 2) + 3x -3?

2009-03-09 2:41 pm

Please explain how you come up with the answer
Thanks

更新1:

Yes, I am trying to find x. I messed up it should also say f(-4) = ?

回答 (3)

2009-03-09 2:51 pm

✔ 最佳答案

If 4x^2+3x-3=0
then x=[-3 + & - (9+48)^1/2] /8=
=0.56873 & -1.31873

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2009-03-09 10:10 pm

f(x) = 4x^2 + 3x - 3
f(-4) = 4(-4)^2 + 3(-4) - 3
f(-4) = 4(16) + (-12) - 3
f(-4) = 64 - 12 - 3
f(-4) = 49

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2009-03-09 9:45 pm

are you trying to find X?

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