What is factor 21x^2-22x-8 ?

The solution to factor 21x^2-22x-8 is (7x+2)(3x-4)

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factor 21x^2-22x-8

factor

21 x^{2} - 22 x - 8

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

Solution steps

21 x^{2} - 22 x - 8

Break the expression into groups

= (21 x^{2} + 6 x) + (- 28 x - 8)

Factor out

3 x

from

21 x^{2} + 6 x : 3 x (7 x + 2)

Factor out

- 4

from

- 28 x - 8 : - 4 (7 x + 2)

= 3 x (7 x + 2) - 4 (7 x + 2)

Factor out common term

7 x + 2

= (7 x + 2) (3 x - 4)

- 4 (9 m - 5) - 9 (5 m + 4)

(d - 2)^{3}

- ∣ - 5 \cdot (- 7) ∣

\frac{( - 7 ) ^{- 6}}{( - 7 ) ^{- 4}}

5 x^{2} + 32 x + 12