Question

find the value of m
27m = (42)² - (21)²​

Answer 1

Step-by-step explanation:

Here we have to use

a^2+ b^2

so 27m=(42+21) (42-21)

27m=63×21

m= 63×21/27

m=49

Answer 2

27m = (42)²-(21)²

=> 27m = (42+21)(42-21)

=> 27m = 63×21

=> m = 63×21

27

=> m = 49

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