pt

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular Álgebra >

expandir pir^2(84-2pir)

Solução

expandir

π r^{2} (84 - 2 π r)

Solução

- 2 π^{2} r^{3} + 84 π r^{2}

Passos da solução

π r^{2} (84 - 2 π r)

Colocar os parênteses utilizando:

a (b - c) = ab - a c

a = π r^{2}, b = 84, c = 2 π r

= π r^{2} \cdot 84 - π r^{2} \cdot 2 π r

= 84 π r^{2} - 2 ππ r^{2} r

Simplificar

84 π r^{2} - 2 ππ r^{2} r : - 2 π^{2} r^{3} + 84 π r^{2}

= - 2 π^{2} r^{3} + 84 π r^{2}

Exemplos populares

expandir (1+3e^{-x})^2

e x p an d (1 + 3 e^{- x})^{2}

expandir x^5x^2

e x p an d x^{5} x^{2}

d/(dt)((4)(7+e^{-t^2}))

\frac{d}{d t} ((4) (7 + e^{- t^{2}}))

expandir dx(x^4+2x^3-7)

e x p an d d x (x^{4} + 2 x^{3} - 7)

(\partial)/(\partial r)((x)(r+3s-t))

\frac{\partial}{\partial r} ((x) (r + 3 s - t))