Math, asked by AmarjeetKumarKarn, 1 year ago

find the cube of 396 by identities

Answers

Answered by sharanyakapoor98
3
(369) ^3 = (400-4) ^3
Identity using (a-b) ^3
= a^3 - b^3 - 3(a)^2(b) + 3(a)(b)^2

a=400 : b=4

(400)^3 - (4)^3 - 3(400)^2 (4) + 3(400)(4)^2

64000000 - 64 - 1920000 + 19200

= 62099136
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