What is (x-1)-(2x^2+x-3) ?

The solution to (x-1)-(2x^2+x-3) is -2x^2+2

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simplify (x-1)-(2x^2+x-3)

simplify

(x - 1) - (2 x^{2} + x - 3)

- 2 x^{2} + 2

Solution steps

(x - 1) - (2 x^{2} + x - 3)

Apply rule:

(a) = a

(x - 1) = x - 1

= x - 1 - (2 x^{2} + x - 3)

Apply the distributive law:

- (a + b) = - a - b

- (2 x^{2} + x - 3) = - 2 x^{2} - x + 3

= x - 1 - 2 x^{2} - x + 3

Group like terms

= - 2 x^{2} + x - x - 1 + 3

Add similar elements:

x - x = 0

= - 2 x^{2} - 1 + 3

Add the numbers:

- 1 + 3 = 2

= - 2 x^{2} + 2

(- 10)^{- 2}

5 \frac{2}{3} + 7 \frac{2}{3}

7 (2 x - 4) - (10 - 3 x)

\frac{1}{1 + 2 i} + \frac{1}{1 + 7 i}

4 \div \frac{7}{6}