How to factor: k^2-13k+40

2 answers:

7 0

$k^2-13k+40\\\\------------------------\\\\-13=-5+(-8)\\\\40=(-5)\cdot(-8)\\\\-------------------------\\\\k^2-13k+40=(k-5)(k-8)$

andrezito [222]3 years ago

6 0

$k^2-13k+40=k^2-5k-8k+40=k(k-5)-8(k-5)=\\\\=(k-5)(k-8)$

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