Factorise: x^2+8 x+16 - Vidyadip

Question

Factorise: $x^2+8 x+16$

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Answer

Using identity, $a^2+2 a b+b^2=(a+b)^2$
$x^2+8 x+16$
$=x^2+2(x)(4)+4^2 $
$ =(x+4)^2$
= (x + 4)(x + 4)
This is the required factorisation.

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