Question

(x+3) (x+7) using identify
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Answer 1

Using the identity: (x + a)(x + b) = x² + (a + b)x + ab

(x + 3)(x + 7)

= x² + (7 + 3)x + (7)(3)

= x² + 10x + 21

(x+3)(x+7) = x² + 10x + 21

Answer 2

Answer:

×+3

×+7

ײ+10×+21

Step-by-step explanation:

×+3

×+7

ײ+3×

   +7×+21

ײ+10×+21