Question

1. Using the identity
(i) (x + 7) (x + 3)


Using the identity​

Answer 1

Answer:

(x+7)(x+3)

x^2+(a+b)x + ab

x^2 +(7+3)x + 7×3

x^2 + 10x + 21

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Answer 2

by the identity ( x + a ) ( x + b ) = x² + ( a+b ) x + ab

= x² + ( 7+3 ) x + (7)(3)

= x² + 10x + 21