2 Answers

Quixrick · Answer 1 · 2017-03-19T11:42:38+0000

STEPS :

(8m + 7) ^ 2
Apply distributing rule : (a + b)^2 = a^2 + 2ab + b^2

= (8m)^2 + 2 ⋅ 8m ⋅ 7 + 7^2
(8m)^2 = 64m^2
2 ⋅ 8m ⋅ 7 = 112m
7^2 = 49

= 64m^2 + 112m + 49

Hope this helps :)

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