JAMB - Mathematics (2021 - No. 31)
factorize m\(^3\) - m\(^2\) + 2m - 2
(m2 + 1)(m - 2)
(m - 1)(m + 1)(m + 2)
(m - 2)(m + 1)(m - 1)
(m2 + 2)(m - 1)
설명
Using the trial expansion of each option
(m\(^2\) + 2) (m - 1)
OR
Group the terms
(\(m^3 - m^2\)) + ( 2m - 2)
\(m^2\)(m - 1) + 2(m - 1)
(m-1)(\(m^2\) + 2)