Math, asked by ashoknegi5686, 4 months ago

x ki power 2 + 4 x minus 21

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Answered by XxRedmanherexX

0

${x}^{2} + 4x - 21 \\ = {x}^{2} + 7x - 3x - 21 \\ = x(x + 7) - 3(x + 7) \\ = (x + 7)(x - 3)$

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