What is expand (3x-1)(3x^2+7x+9) ?

The solution to expand (3x-1)(3x^2+7x+9) is 9x^3+18x^2+20x-9

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expand (3x-1)(3x^2+7x+9)

expand

(3 x - 1) (3 x^{2} + 7 x + 9)

9 x^{3} + 18 x^{2} + 20 x - 9

Solution steps

(3 x - 1) (3 x^{2} + 7 x + 9)

Distribute parentheses

= 3 x \cdot 3 x^{2} + 3 x \cdot 7 x + 3 x \cdot 9 - 1 \cdot 3 x^{2} - 1 \cdot 7 x - 1 \cdot 9

Simplify

3 x \cdot 3 x^{2} + 3 x \cdot 7 x + 3 x \cdot 9 - 1 \cdot 3 x^{2} - 1 \cdot 7 x - 1 \cdot 9 : 9 x^{3} + 18 x^{2} + 20 x - 9

= 9 x^{3} + 18 x^{2} + 20 x - 9

(2 x - y) (2 x + y)

e^{x + l n (x)}

\frac{x ^{3} - x ^{2} - 42 x}{2 x ^{2} - 20 x + 42}

a + a + a

(- 9 - 6 i) (11 - 7 i)

What is expand (3x-1)(3x^2+7x+9) ?
The solution to expand (3x-1)(3x^2+7x+9) is 9x^3+18x^2+20x-9