MaryanneCanner360 MaryanneCanner360

19-05-2014
Mathematics

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

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Аноним Аноним

19-05-2014

[tex]k^2-13k+40\\\\------------------------\\\\-13=-5+(-8)\\\\40=(-5)\cdot(-8)\\\\-------------------------\\\\k^2-13k+40=(k-5)(k-8)[/tex]

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kate200468 kate200468

19-05-2014

[tex]k^2-13k+40=k^2-5k-8k+40=k(k-5)-8(k-5)=\\\\=(k-5)(k-8)[/tex]

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