How do you factor $a^2 - c^2$ ?

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Answer 1 · 2015-11-18T17:28:48

$color(blue)((a-c)(a+c)$ is the factorised form of the expression.

$a^2-c^2$

As per property:
$color(blue)(x^2-y^2=(x+y)(x-y)$

Applying the same to the expression:

$a^2-c^2 = color(blue)((a+c)(a-c)$
(Here $a=x,c=y$ )

$color(blue)((a-c)(a+c)$ is the factorised form of the expression.

How do you factor a^2 - c^2a^2 - c^2?