i need help in this problem
7x^2-4x-2-8x+4x^2
my answer is
12^2-12x-2
is that the Correct answer ?
my work
7+5=12x
-4-8=-12x
-2
final answer is 12^2-12x-2????
2006-10-03 15:05:40 · 7 answers · asked by plz help me 1 in Science & Mathematics ➔ Mathematics
yes it was a typo
2006-10-03 15:11:52 · update #1
i made a huge mistake its +5 at the end :P
2006-10-03 15:13:17 · update #2
I believe the answer should be 11x^2 - 12x - 2
2006-10-03 15:08:37 · answer #1 · answered by shamu 2 · 0⤊ 0⤋
Somewhere you made a typo, your problem says 4x^2 but your work says 5x^2.
The answer is 11x^2 - 12x - 2
2006-10-03 22:08:49 · answer #2 · answered by hayharbr 7 · 0⤊ 0⤋
i got 11x^2 -12x-2 because there is no 5 in the problem other wards i think you got everything right
7x^2+ 8x^2= 11x^2
-4x+ (-8X) = 12x
and then of course the -2
which results in 11x^2 -12x- 2
it doesnt matter what order its in
2006-10-03 22:12:53 · answer #3 · answered by hotchikdancer 2 · 0⤊ 0⤋
It is 7 + 4 not 7 + 5.
There's no 5 in the original formula
2006-10-03 22:09:51 · answer #4 · answered by Demiurge42 7 · 0⤊ 0⤋
7x^2-4x-2-8x+4x^2
=11x^2-12x-2(adding like terms)
this is the answer
2006-10-04 03:48:30 · answer #5 · answered by srirad 2 · 0⤊ 0⤋
11x^2-12x-2
combine like terms
2006-10-03 22:12:54 · answer #6 · answered by Anonymous · 0⤊ 0⤋
11x^2 -12x - 2
2006-10-03 22:12:46 · answer #7 · answered by a e 2 · 0⤊ 0⤋