if 2x-3x=12, find the value of 8x^3-27y^3-72xy. please answer
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Answered by
0
Answer:
64 is the answer
Step-by-step explanation:
Answered by
0
Answer:
question samjh nhi aaya but fir bhi....
Step-by-step explanation:
2x + 3y = 12
xy = 6 => y = 6/x
2x + 3 * 6/x = 12
2x^2 - 12x + 18 = 0
x^2 - 6x + 9 = 0
(x - 3)^2 = 0
x = 3
y = 2
8x^3 + 27y^3
= 8 * 3^3 + 27 * 2^3
= 432
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