What is expand (x+y+2)(x+y-2) ?

The solution to expand (x+y+2)(x+y-2) is x^2+2xy+y^2-4

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expand (x+y+2)(x+y-2)

expand

(x + y + 2) (x + y - 2)

x^{2} + 2 x y + y^{2} - 4

Solution steps

(x + y + 2) (x + y - 2)

Distribute parentheses

= xx + x y + x (- 2) + y x + yy + y (- 2) + 2 x + 2 y + 2 (- 2)

Simplify

xx + x y + x (- 2) + y x + yy + y (- 2) + 2 x + 2 y + 2 (- 2) : x^{2} + 2 x y + y^{2} - 4

= x^{2} + 2 x y + y^{2} - 4

- 6 z + 2 z + 6 z + z

(x + 2) (x^{2} + 4)

2 \frac{1}{2} - 1

15300

\frac{6 x ^{2} y}{12 x y ^{2}}

What is expand (x+y+2)(x+y-2) ?
The solution to expand (x+y+2)(x+y-2) is x^2+2xy+y^2-4