1.

Use suitable identities to find the products of (1 + x) (1 + x)

Answer»

(1 + x) (1 + x) 

= (1 + x)2 = 12 + 2 (1) (x) + x2 

[∵(x + y)2 = x2 + 2xy + y2

= 1 + 2x + x2



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