Question

factorize: x^2-10x=21

Answer 1

Step-by-step explanation:

x^2-10x-21=0

x^2-7x-3x-21=0

x(x-7) -3(x-7) =0

(x-3) (x-7) =0

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Answer 2

Step-by-step explanation:

x^2-10x-21=0

x^2-7x-3x-21

x (x-7)-3 (x-7)

(x-3)(x-7)=0

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