Question

Complete the square.
m2 - 20m
Find the missing term that completes the square.
m2 - 20m + ?

Answer 1

Answer:

+ 100

Step-by-step explanation:

Given

m² - 20m

To complete the square

add ( half the coefficient of the m- term )² to m² - 20m

m² + 2(- 10)m + (- 10)²

= m² - 20m + 100 = (m - 10)² ← perfect square