Factorize using suitable identities:

2x^2+11x-21

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Solution

2x^2+11x-21=0

2x^2+14x-3x-21=0

2x(x+7)-3(x+7)=0

(2x-3)(x-7)=0

Solution of equation,

(2x-3)=0 and (x-7)=0

x=3/2 or 7

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