(m-1)²
= m² - 2×m×1 + 1²
= m² - 2m + 1
Use the identity - (a - b)² = a² - 2ab + b²
Hope it helps cha :)
Answer:
m^2 -2m + 1
Step-by-step explanation:
=(m-1)(m-1)
=m^2 -m-m+ 1
= m^2 -2m + 1
