Question

find the trinomial..r^2-r-12

Answer 1

find two numbers that mulitply to be -12 and add to be -1

Answer 2

If you want to check you answer, its (r-4)*(r+3)
This is because -4 * 3 = -12
And -4 + 3 = -1

Answer 3

\[(r-4)(r+3)\]