What is factor 8x^2-21x-9 ?

The solution to factor 8x^2-21x-9 is (8x+3)(x-3)

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factor 8x^2-21x-9

factor

8 x^{2} - 21 x - 9

(8 x + 3) (x - 3)

Solution steps

8 x^{2} - 21 x - 9

Break the expression into groups

= (8 x^{2} + 3 x) + (- 24 x - 9)

Factor out

x

from

8 x^{2} + 3 x : x (8 x + 3)

Factor out

- 3

from

- 24 x - 9 : - 3 (8 x + 3)

= x (8 x + 3) - 3 (8 x + 3)

Factor out common term

8 x + 3

= (8 x + 3) (x - 3)

ln (7) = 3 y

5 z = - 60

\frac{n}{2} (25 + (n - 1) (- 6)) = - 20

H B r (a q) + H^{2} O (l)

4 x^{2} + 9 x - 9