Question

Knowing that the result of expanding (x+a)(x-6) is x²+mx-48, find the values ​​of a and m.​

Answer 1

We know -48 came from (a)(-6), the "L" in "FOIL".

If -48 = -6a, then a = 8.

Now with a=8, go ahead and FOIL (x+8)(x-6) to find m.