Question

factorisation method
$7 {m}^{2} - 84 = 0$

Answer 1

This is your answer.....

Answer 2

7m^2 - 84 = 0

7m^2 = 84

m^2 =84/7

m^2 = 12

m= root12

m = 2 root 3 


i hope this will help you



-by ABHAY