IF X/Y + X/Y = -1 (X,Y ≠ 0) THE VALUE OF X³ - Y³ IS
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Step-by-step explanation: given x/y +x/y = -1
=) 2x/y =-1
=) 2x=-y
=) 2x+y =0
=) y= -2x......(1)
Now, x^.x - y^.y = x^.x -(-2x)^.(-2x)
=x^.x + 2x.(-2x)^
= x^.x + 2x(4x^)
= x^.x + 8x^.x
= x^.x(1+8)
= 9x^.x
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