Topic
Q:
/прости выражение \( (\sqrt{2}+3 \sqrt{7})^{2} \)
Q:
22) \( \frac{\left(x^{-\frac{1}{2}} y^{4}\right)^{\frac{1}{4}}}{x^{\frac{2}{3}} y^{\frac{3}{2}} \cdot x^{-\frac{3}{2}} y^{\frac{1}{2}}} \)
Q:
Simplify the rational expression. If the rational expression cannot be simplified, so state.
\( \frac{4 y-20}{3 y-15} \)
Select the correct choice below and fill in any answer boxes in your choice.
A. \( \frac{4 y-20}{3 y-15}=\square \)
B. The expression cannot be simplified.
Q:
Solve the equation using the zero-product principle.
\[ 10(x-3)(5 x+8)=0 \]
The solution set is \( \{\square \).
(Use a comma to separate answers as needed.)
Q:
\( \Rightarrow \quad 6 = ( 6 z ^ { 2 } + 2 z ^ { 2 } ) - ( 4 z ^ { 2 } + 5 z ^ { 4 } ) = \)
Q:
Yolanda purchased a prepaid phone card for \( \$ 45.50 \). Calls cost 7 cents a minute using this card. The credit, \( C \) (in dollars), left on the card after it is used for \( x \)
minutes of calls is given by the following function.
\[ C(x)=45.50-0.07 x \]
How much credit is left on the card after Yolanda uses it for 40 minutes of calls?
Q:
ппрости выражение \( (\sqrt{2}+2)^{2} \).
Q:
Simplificando \( \frac{x^{2}-5 x+6}{2 a x-6 a} \) se obtiene
Q:
3. \( \begin{aligned} y+x & =7 \\ x-y & =-3\end{aligned} \)
Q:
11) \( (3 a-1)(-2 a+3) \)
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