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

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

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

expand

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

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

Solution steps

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

Distribute parentheses

= xx + x (- y) + x \cdot 2 + y x + y (- y) + y \cdot 2 - 2 x - 2 (- y) - 2 \cdot 2

Simplify

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

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

(4 x - 6 y)^{2}

(- 4) (- 12)

22 + 23

(2^{4})^{- 1}

10 x + 4

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