What is expand-1/9 (9-x)^3-4(9-x)-20 ?

The solution to expand-1/9 (9-x)^3-4(9-x)-20 is -3x^2+31x+(x^3)/9-137

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expand-1/9 (9-x)^3-4(9-x)-20

expand

- \frac{1}{9} (9 - x)^{3} - 4 (9 - x) - 20

- 3 x^{2} + 31 x + \frac{x ^{3}}{9} - 137

Solution steps

- \frac{1}{9} (9 - x)^{3} - 4 (9 - x) - 20

Expand

- \frac{1}{9} (9 - x)^{3} : - 81 + 27 x - 3 x^{2} + \frac{x ^{3}}{9}

= - 81 + 27 x - 3 x^{2} + \frac{x ^{3}}{9} - 4 (9 - x) - 20

Expand

- 4 (9 - x) : - 36 + 4 x

= - 81 + 27 x - 3 x^{2} + \frac{x ^{3}}{9} - 36 + 4 x - 20

Simplify

- 81 + 27 x - 3 x^{2} + \frac{x ^{3}}{9} - 36 + 4 x - 20 : - 3 x^{2} + 31 x + \frac{x ^{3}}{9} - 137

= - 3 x^{2} + 31 x + \frac{x ^{3}}{9} - 137

(x + 1) (x^{2} + 1) 2 - x

(- 5 x^{2} - 10 x - 7 y + 2) d e (3 x^{2} - 4 + 7 x)

(3 - e^{3 x})^{2}

(2 + 2 t) 1 + 3 t - (2 + 2 t)^{2} (1 + 3 t)^{2}

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

What is expand-1/9 (9-x)^3-4(9-x)-20 ?
The solution to expand-1/9 (9-x)^3-4(9-x)-20 is -3x^2+31x+(x^3)/9-137