2006-12-18 01:14:25 · 7 answers · asked by styles4u 4 in Science & Mathematics ➔ Mathematics
First: you have four terms > group like terms:
= (a^2 + 4a) - (b^2 - 4b)
Second: factor each set > find a common number/variable:
= a(a + 4) - b(b + 4)
= (a + b + 4)(a - b)
2006-12-18 05:03:12 · answer #1 · answered by ♪♥Annie♥♪ 6 · 0⤊ 1⤋
(a ? b)(a + b + 4) Distribute (a-b) to (a+b+4) a x a =a^2 a x b = ab a x 4 = 4a then the b -b x a = -ab -b x b = -b^2 -b x 4 = -4b a^2 + ab + 4a - ab -b^2 - 4b cancel ab and - ab you have a^2 -b^2 +4a -4b
2016-10-05 11:13:56 · answer #2 · answered by ? 4 · 0⤊ 0⤋
a^2 - b^2 + 4a - 4b
= (a+b)(a-b) +4(a-b)
= (a-b)(a+b+4)
2006-12-18 01:18:57 · answer #3 · answered by ironduke8159 7 · 2⤊ 1⤋
a² - b² + 4a - 4b
= (a+b)(a-b) + 4(a-b)
= (a-b)(a+b+4)
2006-12-18 03:16:34 · answer #4 · answered by Ranna Renni 2 · 1⤊ 1⤋
a² - b²+ 4a - 4b
a(a + 4) - b(b +4)
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2006-12-18 03:06:57 · answer #5 · answered by aeiou 7 · 1⤊ 0⤋
a² - b² + 4a - 4b
(a + b)(a - b) + 4(a - b)
(a + b + 4)(a - b)
- - - - - - -s-
2006-12-18 06:28:01 · answer #6 · answered by SAMUEL D 7 · 0⤊ 0⤋
Same answer as ironduke8159.
2006-12-18 05:48:58 · answer #7 · answered by Anonymous · 0⤊ 0⤋