What is 2(x-1)(x+1)-(2x-1)(x+1) ?

The solution to 2(x-1)(x+1)-(2x-1)(x+1) is -x-1

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simplify 2(x-1)(x+1)-(2x-1)(x+1)

simplify

2 (x - 1) (x + 1) - (2 x - 1) (x + 1)

- x - 1

Solution steps

2 (x - 1) (x + 1) - (2 x - 1) (x + 1)

Expand

2 (x - 1) (x + 1) : 2 x^{2} - 2

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

Expand

- (2 x - 1) (x + 1) : - 2 x^{2} - x + 1

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

Group like terms

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

Add similar elements:

2 x^{2} - 2 x^{2} = 0

= - x - 2 + 1

Add the numbers:

- 2 + 1 = - 1

= - x - 1

(2 - t)^{4}

x^{2} + \frac{1}{( x ^{2} )} + 2 - 2 x - \frac{2}{x}

(a + b)^{3} - 16 (a + b)

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

\frac{9}{x} - \frac{8}{t}

What is 2(x-1)(x+1)-(2x-1)(x+1) ?
The solution to 2(x-1)(x+1)-(2x-1)(x+1) is -x-1