Question

m^2-84=0 solve by factorizing method ​

Answer 1

Answer:

m^2 + 0m - 84 = 0

Discriminent= b^2 - 4ac

= 0 - 4*(-84) *(1)

= 336

m = (- b plus minus root D)/2a

m = ( 0 plus minus root 336)2

m = (plus minus 4 root 21)/2

m = (plus minus 2 root 21)

First root = 2√21

Second root = -2√21