How do you factor #6x^2 - 216#?
1 Answer
Aug 14, 2016
#6x^2-216 = 6(x-6)(x+6)#
Explanation:
The difference of squares identity can be written:
#a^2-b^2 = (a-b)(a+b)#
In our example, we find:
#6x^2-216 = 6(x^2-36) = 6(x^2-6^2) = 6(x-6)(x+6)#
