Express as a binomial square:
1) (3x+7)^2-84x
2006-12-02 03:23:25 · 10 answers · asked by Dark angel 1 in Science & Mathematics ➔ Mathematics
Dont waste my time............
2006-12-02 03:27:37 · update #1
(3x+7)²-84x =
9x²+49+42x-84x =
9x²-42x+49 =
= (3x - 7)²
₢
2006-12-02 03:48:42 · answer #1 · answered by Luiz S 7 · 2⤊ 0⤋
(3x+7)^2-84x = 9x+49+2-84
= 9x-33
thats the answer
2006-12-02 11:46:52 · answer #2 · answered by Hemali 2 · 0⤊ 0⤋
expand the square : 9x^2 +42x +49 -84x
simplify 9x^2 -42x +49
is (3x-7)^2
2006-12-02 11:29:06 · answer #3 · answered by maussy 7 · 2⤊ 0⤋
1.9x^2+42x-84x+49
=(3x-7)^2
2006-12-02 11:51:37 · answer #4 · answered by raj 7 · 2⤊ 0⤋
=9x^2+42x+49-84x
=9X^2-42x+49
=[3x-7]^2
2006-12-02 11:39:08 · answer #5 · answered by openpsychy 6 · 2⤊ 0⤋
(3x+7)(3x+7)-84x
9x^2+42x+49-84x
9x^2-42x+49
(3x-7)^2
2006-12-02 12:14:44 · answer #6 · answered by Anonymous · 1⤊ 0⤋
I won't do it because you don't choose best answers to your questions.
2006-12-06 09:48:07 · answer #7 · answered by Shadow 1 · 0⤊ 0⤋
Yes I can. If I had posted a question on yahoo! whenever I had a math problem, I couldn't.
2006-12-02 11:29:24 · answer #8 · answered by frank m 2 · 0⤊ 4⤋
yes
2006-12-02 11:30:36 · answer #9 · answered by snoringblackdog 2 · 0⤊ 3⤋
I can do it.
2006-12-02 11:24:55 · answer #10 · answered by x_squared 4 · 0⤊ 4⤋