find the value of 27 x cube + 8 y cube in 3 X + 2 Y is equal to 14 and X Y is equal to 8
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3
27x³ + 8y³ = (3x)³ + (2y)³ = (3x+2y)(9x² + 4y² - 2x*3y)
= (14) ((3x+2y)²- 2*3x*2y - 6xy)
= (14) (196 -12xy - 6xy)
= (14) (196 - 18xy) = (14)(196 - 18*8)
= (14) (196-144)
= 14*52 = 728
= (14) ((3x+2y)²- 2*3x*2y - 6xy)
= (14) (196 -12xy - 6xy)
= (14) (196 - 18xy) = (14)(196 - 18*8)
= (14) (196-144)
= 14*52 = 728
udaysingh3:
sorry but your answer is wring
wrong
now check
Answered by
0
27X³+8Y³=7560.... I think soo
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