Math, asked by sunilmrathod2565, 1 month ago

Factorize the following by splitting middle term
a² + 10a + 21

Answers

Answered by jack301092

1

Step-by-step explanation:

a² + 10a + 21

: (a² + 3a) + (7a + 21)

: a(a + 3) + 7(a + 3)

: a² + 10a + 21 = (a+3)(a+7)

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