What is (-4b^2+8b)+(-4b^3+5b^2-8b) ?

The solution to (-4b^2+8b)+(-4b^3+5b^2-8b) is -4b^3+b^2

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simplify (-4b^2+8b)+(-4b^3+5b^2-8b)

simplify

(- 4 b^{2} + 8 b) + (- 4 b^{3} + 5 b^{2} - 8 b)

- 4 b^{3} + b^{2}

Solution steps

(- 4 b^{2} + 8 b) + (- 4 b^{3} + 5 b^{2} - 8 b)

Simplify

(- 4 b^{2} + 8 b) + (- 4 b^{3} + 5 b^{2} - 8 b) : - 4 b^{2} + 8 b - 4 b^{3} + 5 b^{2} - 8 b

= - 4 b^{2} + 8 b - 4 b^{3} + 5 b^{2} - 8 b

Group like terms

= - 4 b^{3} - 4 b^{2} + 5 b^{2} + 8 b - 8 b

Add similar elements:

- 4 b^{2} + 5 b^{2} = b^{2}

= - 4 b^{3} + b^{2} + 8 b - 8 b

Add similar elements:

8 b - 8 b = 0

= - 4 b^{3} + b^{2}

8 = - 18 y

n + 4 = 3 n - 16

(\frac{1}{2 x})^{2}

2 5^{\frac{5}{2}}

\frac{x ^{3} + 8}{5 x ^{2} - 3 x} < \frac{x}{5}

What is (-4b^2+8b)+(-4b^3+5b^2-8b) ?
The solution to (-4b^2+8b)+(-4b^3+5b^2-8b) is -4b^3+b^2