Question

What are the factors of m2 – 12m + 20?

m – 14 and m – 6
m – 10 and m – 2
m – 9 and m – 3
m – 5 and m – 4

Answer 1

m^2 − 12m + 20 = (m − 10)(m − 2), since −10 and −2 add to −12 and multiply to 20.