Question

$(x {3 - y {3}^{?} }^{?}$
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Answer 1

Explanation:

(x-y)(x2+xy+y2)..............

Answer 2

Formula of X³ — Y³ ?

⟹(X-Y) (X²+XY+Y²)

Solution of Verification :-

R.H.S

⟹ (X-Y)(X²+XY+Y²)

⟹X³ + X²Y + XY² - X²Y - XY² - Y³

Here (+) & (-) sign will be cancelled.

Cancellation Terms :-

• (+ X²Y) and (- X²Y)
• (+ XY²) and (- XY²)

Now remaining term is :-

⟹ X³-Y³ = L.H.S

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L.H.S = R.H.S !!