What is factor 5x^2+22x+21 ?

The solution to factor 5x^2+22x+21 is (5x+7)(x+3)

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factor 5x^2+22x+21

factor

5 x^{2} + 22 x + 21

(5 x + 7) (x + 3)

Solution steps

5 x^{2} + 22 x + 21

Break the expression into groups

= (5 x^{2} + 7 x) + (15 x + 21)

Factor out

x

from

5 x^{2} + 7 x : x (5 x + 7)

Factor out

3

from

15 x + 21 : 3 (5 x + 7)

= x (5 x + 7) + 3 (5 x + 7)

Factor out common term

5 x + 7

= (5 x + 7) (x + 3)

x^{3} - 4 x < 0

12.5 (3 x - 1) + 132.4 = (2.8 - 4 x) \cdot 0.5

(- 4 - 4 i) (- 5 - 3 i)

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