find the value of 27x³-8y³ if 3x-2y=11 andxy=12
Answers
Answered by
0
Step-by-step explanation:
3x-2y =11
( 3x-2y )^3 = 11^3
( 3x )^3- ( 2y )^3- 3{3x}{2y}{3x-2y} = 1331
27x^3 - 8y^3 - 18(xy)(11) = 1331
27x^3 - 8y^3- 198(12) = 1331
27x^3 - 8y^3 = 1331 + 2376
= 3707
Similar questions