Question

Matemáticas rápidas
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Answer 1

Respuesta:

$1. \: 4-2=2$

$2. \: \frac{ab^3}{a^2b^5}:\quad \frac{1}{ab^2}$

$3. \: 6a-3b-8a+b=-2a-2b$

$4. \: 6.75-12.75=-6$

$5. \: A=3.1416$

Explicación paso a paso:

1.

$4-2=2$

2.

$\frac{ab^3}{a^2b^5}$

$=\frac{b^3}{ab^5}$

$=\frac{1}{ab^2}$

3.

$6a-8a-3b+b$

$=-2a-3b+b$

$=-2a-2b$

4.

$\frac{\begin{matrix}\space\space&\textbf{0}&12&\space\space&\space\space&\space\space\\ \space\space&\textbf{\linethrough{1}}&\linethrough{2}&.&7&5\\ -&\textbf{0}&6&.&7&5\end{matrix}}{\begin{matrix}\space\space&\textbf{0}&6&.&0&0\end{matrix}}$

$=-6$

5.

$A=pi\cdot r^2$

$r=1cm$

$A=3.1416\cdot \left(1\right)^2$

$A=3.1416$