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2007-10-25 18:01:59 · 10 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
assuming that A= 3*2-2x-7 and B=x^2+9
3*2 denoting multiplication; x^2 meaning x raised to the second power, or squared.
if this is the case, the answer to A+B= x^2-2x+8
if A= (3x)^2-2x-7, the answer is 10x^2-2x+2
if A= 3x^2-2x-7, the answer is 4x^2-2x+2
2007-10-25 18:13:26 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A. (x-4)2=9 => 2x-8=9 =>2x=9+8 =>x=17/2 B. x^2-2x-8=0 =>x^2-4x+2x-8=0 =>x(x-4)+2(x-4)=0 =>(x+2)(x-4)=0 the following, both (x+2)=0 =>x=-2 or (x-4)=0 =>x=4 C. if a/b=c/d then, c = advert/b or, a/b=c/d using componuendo-dividendo, we get, (a+b)/(a-b)=(c+d)/(c-d) (a+b)(c-d)=(a-b)(c+d) ac+bc-bd=ac-bc-bd ac-ac+bc+bc-bd+bd=0 2bc=0 c=0
2016-10-23 00:27:22 · answer #2 · answered by ? 4 · 0⤊ 0⤋
A = 3x^2-2x-7
B = x^2+9
A+B = 3x^2-2x-7+ x^2+9
A+B = 4x^2-2x+2
A+B = 2(2x^2-x+2)
2007-10-25 18:31:11 · answer #3 · answered by kaShiRa 2 · 0⤊ 0⤋
3x^2 -2x - 7 + x^2 +9
4x^2 -2x + 2
answer d
2007-10-25 18:08:31 · answer #4 · answered by Ms. Exxclusive 5 · 0⤊ 0⤋
4x^2-2x+2
2007-10-25 18:11:54 · answer #5 · answered by rain 1 · 0⤊ 0⤋
4x2 -2x +2
(the 2nd one from the bottom)
(i think its hte 4th)
2007-10-25 18:09:22 · answer #6 · answered by cjb330 3 · 0⤊ 0⤋
the fourth answer,very easy
2007-10-25 18:14:47 · answer #7 · answered by kamote 1 · 0⤊ 0⤋
4xsquare - 2x + 2
uhhh yea im dumb i think so
2007-10-25 18:09:58 · answer #8 · answered by Elle 5 · 0⤊ 0⤋
d
4x2 -2x +2
just add them together
2007-10-25 18:07:32 · answer #9 · answered by sancho 2 · 0⤊ 1⤋
D
2007-10-25 18:07:03 · answer #10 · answered by iyiogrenci 6 · 1⤊ 0⤋