What is (2-x)^2-4(2-x) ?

The solution to (2-x)^2-4(2-x) is x^2-4

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simplify (2-x)^2-4(2-x)

simplify

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

x^{2} - 4

Solution steps

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

Expand

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

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

Expand

- 4 (2 - x) : - 8 + 4 x

= 4 - 4 x + x^{2} - 8 + 4 x

Group like terms

= x^{2} - 4 x + 4 x + 4 - 8

Add similar elements:

- 4 x + 4 x = 0

= x^{2} + 4 - 8

Subtract the numbers:

4 - 8 = - 4

= x^{2} - 4

- 4 x - 1

(- 9 + 8 i) - (5 - 3 i)

\frac{6}{\frac{x}{y}}

\frac{3}{4} \div 8

(x^{3} y^{6})^{\frac{1}{3}}