if X + Y is equals to 3 x y is equals to 2 find the value of x power 3 minus y to the power 3
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Step-by-step explanation:
Given that, x+y=12 and xy=27
We know,
(x+y)
3
=x
3
+y
3
+3xy(x+y)
Therefore,
12
3
=x
3
+y
3
+3×27×12
1728=x
3
+y
3
+972
x
3
+y
3
=1728−972=756
∴x
3
+y
3
=756
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