1.

Factorize: x2 + 8x + 16

Answer»

Given, 

x2 + 8x + 16 

By using the formula (a + b)2 = a2 + 2ab + b2 

We get, 

= x2 + 2 × (x) × 4 + (4)2 

= (x + 4)2



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