What is factor 5x^3+x^2-20x-4 ?

The solution to factor 5x^3+x^2-20x-4 is (5x+1)(x+2)(x-2)

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factor 5x^3+x^2-20x-4

factor

5 x^{3} + x^{2} - 20 x - 4

(5 x + 1) (x + 2) (x - 2)

Solution steps

5 x^{3} + x^{2} - 20 x - 4

= (5 x^{3} + x^{2}) + (- 20 x - 4)

Factor out

x^{2}

from

5 x^{3} + x^{2} : x^{2} (5 x + 1)

Factor out

- 4

from

- 20 x - 4 : - 4 (5 x + 1)

= x^{2} (5 x + 1) - 4 (5 x + 1)

Factor out common term

5 x + 1

= (5 x + 1) (x^{2} - 4)

Factor

x^{2} - 4 : (x + 2) (x - 2)

= (5 x + 1) (x + 2) (x - 2)

\frac{3}{4} - \frac{3}{5}

\frac{x ^{2} + 1}{x ^{2} - 3 x + 2} > \frac{x}{x ^{2} - 3 x + 2}

3.6 + 7.2 n < 25.2

9 = 4 (3 k - 4) - 7 k

What is factor 5x^3+x^2-20x-4 ?
The solution to factor 5x^3+x^2-20x-4 is (5x+1)(x+2)(x-2)