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-x2-2x+35
-x2-7x+5x+35
(-x2-7x)(5x+35)
x(-x-7)-5(-x-7)
(x-5)(-1)(-x-7)
(x-5)(x+7)
Langkah 2:
x2-25 = (x+5)(x-5)
langkah 3;
-x2-2x+35/x2-25
(x-5)(x+7)/(x+5)(x-5)
(x+7)/(x+5)
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