How do you factor #4q^2 - 49#?
1 Answer
Apr 21, 2016
Explanation:
The difference of squares identity can be written:
#a^2-b^2 = (a-b)(a+b)#
In our example, both
#4q^2-49 = (2q)^2-7^2 = (2q-7)(2q+7)#