Factor each expression completely. Homework Help ✎
x2 − 49
6x2 + 48x
x2 − x − 72
2x3 − 8x
Notice that this is the difference of squares.
There are only 2 terms, so factor out the greatest common factor.
Find two numbers that multiply to −72 and add to −1.
Factor out the greatest common factor first, then see part (a).
2x(x + 2)(x − 2)