if x squared plus y squared is equal to 20 and X + Y is equal to 6 then find the value of x cube + y cube
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72 is value of x cube plus y cube
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X + Y = 6
then X = 6-Y
substitute this value in
X^2 + Y^2 = 20
you will get value of Y
then put Y value in X + Y =6
you will get the value of X
then put both value in X+Y ka cube and solve it
then X = 6-Y
substitute this value in
X^2 + Y^2 = 20
you will get value of Y
then put Y value in X + Y =6
you will get the value of X
then put both value in X+Y ka cube and solve it
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