Maths

10k 2 +9k-1=0

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Lipika Das
Feb. 5, 2018, 10:38 p.m.

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Lipika Das
Feb. 5, 2018, 10:41 p.m.

10k2+10k-k-1=0

10k(k+1)-1(k+1)

(k+1)(10k-1)

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