Math, asked by yj60720, 3 months ago

evaluation of 78×92

Answers

Answered by DeepakSainiTlk

0

Answer:

78 × 82

= ( 80 - 2 )( 80 + 2 )

using formula --( a - b ) ( a + b ) = a² - b ²

we get --

80² - 4

= 6400 - 4

= 6496 Ans..

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