Question

Find the value of c that completes the square. m2 - 26m + c​

Answer 1

c = 169

Explanation:

Given

m² - 26m

To complete the square

add ( half the coefficient of the m- term)² to m² - 26m

m² + 2(- 13)m + (- 13)²

= m² - 26m + 169 ( with c = 169 )

= (m - 13)² ← perfect square