Question

x squared plus y squared

Answer 1

Answer:

x²+y²

= (x+y)² - 2xy

= (x-y)² + 2xy

Explanation:

Given x²+y²

= (x+y)²-2xy

_______________________

We know the algebraic identity:

$\boxed {(x+y)^{2}=x^{2}+y^{2}+2xy }$

_______________________

Or

x²+y²

= (x-y)² +2xy

_______________________

we know the algebraic identity:

$\boxed { (x-y)^{2}=x^{2}+y^{2}-2xy }$

______________________

Therefore,

x²+y²

= (x+y)²-2xy

= (x-y)²+2xy

•••••

Answer 2

Answer:

x cube + 3 x square + 3 x + 1 bhaga 2 x + 5