Answer
makes sense.
Work Step by Step
In the example given in the previous exercise: we start with $4x^2-100$ and factor out $4$ to get $4(x^2-25)$, which makes it easier to reach $4(x+5)(x-5)$. Otherwise, if you factor like so: $4x^2-100=(2x+10)(2x-10)$, you will need to factor out $2$ from two individual binomials. Thus the statement makes sense.
