What is factor 2x^2+19x-21 ?

The solution to factor 2x^2+19x-21 is (x-1)(2x+21)

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factor 2x^2+19x-21

factor

2 x^{2} + 19 x - 21

(x - 1) (2 x + 21)

Solution steps

2 x^{2} + 19 x - 21

Break the expression into groups

= (2 x^{2} - 2 x) + (21 x - 21)

Factor out

2 x

from

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

Factor out

21

from

21 x - 21 : 21 (x - 1)

= 2 x (x - 1) + 21 (x - 1)

Factor out common term

x - 1

= (x - 1) (2 x + 21)

\frac{n ^{2}}{n - 1} - \frac{n + 5}{n}

+ 5 - 4

+ 6 - 6

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

1 1^{- 3}