What is expand (4x-1)(-x^2+6x+9) ?

The solution to expand (4x-1)(-x^2+6x+9) is -4x^3+25x^2+30x-9

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expand (4x-1)(-x^2+6x+9)

expand

(4 x - 1) (- x^{2} + 6 x + 9)

- 4 x^{3} + 25 x^{2} + 30 x - 9

Solution steps

(4 x - 1) (- x^{2} + 6 x + 9)

Distribute parentheses

= 4 x (- x^{2}) + 4 x \cdot 6 x + 4 x \cdot 9 - 1 \cdot (- x^{2}) - 1 \cdot 6 x - 1 \cdot 9

Simplify

4 x (- x^{2}) + 4 x \cdot 6 x + 4 x \cdot 9 - 1 \cdot (- x^{2}) - 1 \cdot 6 x - 1 \cdot 9 : - 4 x^{3} + 25 x^{2} + 30 x - 9

= - 4 x^{3} + 25 x^{2} + 30 x - 9

(4 + 2 i) (3 + 5 i)

\frac{- 5}{- 4}

\frac{80}{2 - 6 i}

40 x + 8

(1 + 5 i) + (7 + 2 i)

What is expand (4x-1)(-x^2+6x+9) ?
The solution to expand (4x-1)(-x^2+6x+9) is -4x^3+25x^2+30x-9