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Question
Solve the following quadratic equation by factorisation.
m2 - 11 = 0
Solution
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)`
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