What is expand (x+y)^2+2(x+y)+1 ?

The solution to expand (x+y)^2+2(x+y)+1 is x^2+2xy+y^2+2x+2y+1

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expand (x+y)^2+2(x+y)+1

expand

(x + y)^{2} + 2 (x + y) + 1

x^{2} + 2 x y + y^{2} + 2 x + 2 y + 1

Solution steps

(x + y)^{2} + 2 (x + y) + 1

Expand

(x + y)^{2} : x^{2} + 2 x y + y^{2}

= x^{2} + 2 x y + y^{2} + 2 (x + y) + 1

Expand

2 (x + y) : 2 x + 2 y

= x^{2} + 2 x y + y^{2} + 2 x + 2 y + 1

3^{2} - 1^{2}

2 k^{4} x^{4} k

5 x^{3} + 55 x^{2} + 150 x

\frac{1 + 4 i}{4 - i}

1 + \frac{1}{x}

What is expand (x+y)^2+2(x+y)+1 ?
The solution to expand (x+y)^2+2(x+y)+1 is x^2+2xy+y^2+2x+2y+1