Math, asked by sostannusharma, 9 months ago

faotorisethe x2 +10 x+21

Answers

Answered by khushisingh637

1

Answer:

$x ^{2} + 10x + 21 \\ \\ x ^{2} + 7x + 3x + 21 \\ \\ x(x + 7) + 3(x + 7) \\ \\ (x + 7)(x + 3) \\ \\ x = - 7 \: \: \: x = - 3$

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