Question

help solve a problem

Answer 1

4. factor the following:

$2x^2-72$

First thing we do is to factor common term 2 as it follows

$=2(x^2-36)$

then, we factor x^2-36

$=2\cdot(x-6)\cdot(x+6)$

from the above, we can see that the error was in not multiplying by 2 in the last step