Factorize m3 - 2m2 - m + 2

Assessment: JAMB UTME - Mathematics - 1991 Subject: General Mathematics

Question 1 Report

Factorize m3 - 2m2 - m + 2
Answer Details
m3 - 2m2 - m + 2
Let f(m) = m3 - 2m2 - m2 + 2
= f(1)
= 1 - 2 - 2 + 2 = 0
∴ m - 1 is factor  m 3 − 2 m 2 − m 2 + 2 m − 1
= m2 - m - 2
= (m - 1)m2 - m - 2
= (m - 1)(m + 1)(m - 2)

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