Math Question - Finite?

0 ⤊

Math Question - Finite?

f(x) = (x+2)(2x-3). F(-2) =
choose from the following answers
a. 0
b. 6
c. -6
d. -14

2007-09-14 15:00:00 · 3 answers · asked by Trinity 1 in Science & Mathematics ➔ Mathematics

3 answers

a.

x becomes -2.

(-2+2)[2(-2) - 3] = 0*-7 = 0

2007-09-14 15:05:07 · answer #1 · answered by jenh42002 7 · 0⤊ 0⤋

Just plug in -2 wherever the "x" occurs in f(x).

So (-2+2) (2 multiplied by -2 minus 3)

Since -2 + 2 = 0, it doesn't matter what you get when you plug in -2 into 2x-3. Whatever that is multiplied by zero will be zero. So the answer is (a).

Hope that helped!

2007-09-14 22:07:35 · answer #2 · answered by LLH 2 · 0⤊ 0⤋

(-2+2)(2(-2)-3)=?

Hopefully you can go from here...

2007-09-14 22:05:07 · answer #3 · answered by John L 2 · 0⤊ 0⤋