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

The solution to factor 2x^2+x-21 is (x-3)(2x+7)

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factor 2x^2+x-21

factor

2 x^{2} + x - 21

(x - 3) (2 x + 7)

Solution steps

2 x^{2} + x - 21

Break the expression into groups

= (2 x^{2} - 6 x) + (7 x - 21)

Factor out

2 x

from

2 x^{2} - 6 x : 2 x (x - 3)

Factor out

7

from

7 x - 21 : 7 (x - 3)

= 2 x (x - 3) + 7 (x - 3)

Factor out common term

x - 3

= (x - 3) (2 x + 7)

12 < - 3 w

129 = - 1 - 10 R

x^{2} \leq 2 x + 3

0.03 x - 0.2 < 0.06 x + 0.8

- 7 < 3 + 2 x < 8