How do you factor m² - 14m + 40?

1 Answer
Sep 2, 2016

(m-4)(m-10)

Explanation:

To factorise consider the factors of + 40 which also sum to give the coefficient of the middle term, that is -14.

The factors which satisfy these conditions are - 4 and - 10

as -4xx-10=+40" and " -4-10=-14

rArrm^2-14m+40=(m-4)(m-10)