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

1 Answer
Nov 18, 2015

Answer:

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

Explanation:

#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.