multiply x^2+8x+15/x-4 times x^2-16/2x+7

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25-11-2016
Mathematics

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multiply x^2+8x+15/x-4 times x^2-16/2x+7

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Аноним Аноним · Answer 1 · 2016-11-27T08:50:09+01:00

1.(x^2+8x+15)
15: 3x5 8: 5+3
15: 1x15
x^2+8x+15 = (x+3)(x+5)

2.x^2-16 = (x-4)(x+4)
3.2x+6 = 2(x+3)

(((x+3)(x+5))/(x-4)) x ((x-4)(x+4))/(2(x+3)) R: (x+4)/(x+4) = 1
((x+3)(x+5)) x ((x+4)/(2(x+3) R: (x+3)/(x+3) = 1
(x+5) x (x+4)/2

Answer: (x+5)(x+4)/2

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