What is factor 9r^3+15r^2-15r-25 ?

The solution to factor 9r^3+15r^2-15r-25 is (3r+5)(3r^2-5)

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factor 9r^3+15r^2-15r-25

factor

9 r^{3} + 15 r^{2} - 15 r - 25

(3 r + 5) (3 r^{2} - 5)

Solution steps

9 r^{3} + 15 r^{2} - 15 r - 25

= (9 r^{3} + 15 r^{2}) + (- 15 r - 25)

Factor out

3 r^{2}

from

9 r^{3} + 15 r^{2} : 3 r^{2} (3 r + 5)

Factor out

- 5

from

- 15 r - 25 : - 5 (3 r + 5)

= 3 r^{2} (3 r + 5) - 5 (3 r + 5)

Factor out common term

3 r + 5

= (3 r + 5) (3 r^{2} - 5)

\frac{2 j ^{- 1} + 5 j ^{- 2}}{4 - 25 j ^{- 2}}

2 x^{3} + x^{2} - 13 x + 6

a^{2} + 2 a - 8

(p + q)^{2} + 4 (p + q) + 4

x^{2} - \frac{49}{25}

What is factor 9r^3+15r^2-15r-25 ?
The solution to factor 9r^3+15r^2-15r-25 is (3r+5)(3r^2-5)