What is factor 20x^2-9x-20 ?

The solution to factor 20x^2-9x-20 is (5x+4)(4x-5)

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factor 20x^2-9x-20

factor

20 x^{2} - 9 x - 20

(5 x + 4) (4 x - 5)

Solution steps

20 x^{2} - 9 x - 20

Break the expression into groups

= (20 x^{2} + 16 x) + (- 25 x - 20)

Factor out

4 x

from

20 x^{2} + 16 x : 4 x (5 x + 4)

Factor out

- 5

from

- 25 x - 20 : - 5 (5 x + 4)

= 4 x (5 x + 4) - 5 (5 x + 4)

Factor out common term

5 x + 4

= (5 x + 4) (4 x - 5)

0 \leq y \leq 4

2 x^{2} + 3 x - 77

(x - 4) (x - 5) (x - 6) \geq 0

3 x^{2} + 21 x + 30

\frac{5}{- \frac{5}{3}}