Question

verify (x+y)3=(x+y)(x2-xy+y2)

Answer 1

Question needs to be corrected. It will be :

Verify, x³ + y³ = (x + y)(x² - xy + y²)

Answer :

We can try to solve it using the right hand side of the given algebraic identity

Now, (x + y)(x² - xy + y²)

= x (x² - xy + y²) + y (x² - xy + y²)

= x³ - x²y + xy² + x²y - xy² + y³

= x³ + y³

Therefore, x³ + y³ = (x + y)(x² - xy + y²)

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Answer 2

A quadrilateral is a plane figure that has four sides or edges, and also have four corners or vertices.

Hope it will be helpful :)