factor by grouping 7x^2 +7xy +8x +8y?

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2007-07-12 08:49:48 · 4 answers · asked by peaches 1 in Science & Mathematics ➔ Mathematics

7x^2 +7xy +8x +8y

(7x^2 +7xy) + (8x +8y)

factor out GCF
7x (x + y) + 8(x + y)

factor out x + y

(x + y) (7x + 8)

2007-07-12 08:54:29 · answer #1 · answered by 7 · 0⤊ 0⤋

7x^2 +8x = x(7x+8)
7xy +8y= y(7x+8)
(x+y)(7x+8)

2007-07-12 15:56:43 · answer #2 · answered by xandyone 5 · 0⤊ 0⤋

7xÂ² + 7xy + 8x + 8y

7x(x + y) + 8(x + y)

(7x + 8)(x + y)
.

2007-07-12 15:55:22 · answer #3 · answered by Robert L 7 · 0⤊ 0⤋

= 7x (x + y) + 8 (x + y)
= (x + y) (7x + 8)

2007-07-12 17:10:12 · answer #4 · answered by Como 7 · 0⤊ 0⤋