Question

using identities express :(138)^2-(62)^2

Answer 1

Hello friend

Here we have to use the identity :
( a + b ) ( a - b ) = a^2 - b^2

Here
a = 138
b = 62

138^2 - 62^2
= ( 138 + 62 ) ( 138 - 62 ) = ( 200 ) ( 76 ) = 15200

Hope it helps !!
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Answer 2

Answer:

here,

a=138

b=62

(138)^2-(62)^2

(138+62) (138+62)

(200)×(76)

=15200 is the answer