Question

Solve the following quadratic equation by factorisation.

m² - 11 = 0

Answer 1

m² - 11 = 0

⇒ `m^2 - (sqrt11)^2 = 0`

⇒ `(m - sqrt11) (m + sqrt11) = 0`

⇒ `m-sqrt11=0 or m+sqrt11=0`

⇒ `m = sqrt11 or m=-sqrt(11)`