How do you factor #m² - 14m + 40#?
1 Answer
Sep 2, 2016
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)#
