If 2x + 3y = 12 and xy = 6 , find the value of 8x³ + 27y³
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answer is. 432
Step-by-step explanation:
2x+3y=12
xy=6
x=6/y
2x+3(6/x)=12
2x²+18=12x
solving this will get x=3
so y=2
put it in the eq. 8x³+27y³
so 432
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