x3 -y3=(x-y) (x2+xy) (x2-xy+y2)
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Step-by-step explanation:
To verify put x=1 and y=2 in given equations, and check wheater LHS and RHS are equal.
(i) x
3
+y
3
=(x+y)(x
2
−xy+y
2
)
LHS: x
3
+y
3
= 1
3
+2
3
=9
RHS: =(x+y)(x
2
−xy+y
2
) =(1+2)(1
2
−1.2+2
2
) =9
verified
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