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

The solution to expand (2x-1)(2x^2-x+7) is 4x^3-4x^2+15x-7

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

expand

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

4 x^{3} - 4 x^{2} + 15 x - 7

Solution steps

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

Distribute parentheses

= 2 x \cdot 2 x^{2} + 2 x (- x) + 2 x \cdot 7 - 1 \cdot 2 x^{2} - 1 \cdot (- x) - 1 \cdot 7

Simplify

2 x \cdot 2 x^{2} + 2 x (- x) + 2 x \cdot 7 - 1 \cdot 2 x^{2} - 1 \cdot (- x) - 1 \cdot 7 : 4 x^{3} - 4 x^{2} + 15 x - 7

= 4 x^{3} - 4 x^{2} + 15 x - 7

2 \times 1 0^{- 6}

+ a r g (\frac{i}{5})

4 \times 36

4 \times 10

2250

What is expand (2x-1)(2x^2-x+7) ?
The solution to expand (2x-1)(2x^2-x+7) is 4x^3-4x^2+15x-7