Topic
Q:
Diferchein de cundrados
\( 4 x^{2}-64 \)
Q:
e) \( \frac{2 x-3}{2}-\frac{3 x+1}{4}=1 \)
Q:
A) \( 18 x^{3}-2,7 x^{8} \)
Q:
11) \( (3 a-1)(-2 a+3) \)
Q:
Solve for \( x \).
\[ 4 x-8=68 \]
Simplify your answer as much as possible.
\( x=\square \)
\( \begin{array}{ll}\frac{\square}{\square} & \square \frac{\square}{\square} \\ \times & 5\end{array} \)
Q:
Rafael purchased a prepaid phone card for \$25.00, Calls cost 7 cents a minute using this card. The credit, \( C \) (in dollarg), left on the card after it is used for \( x \)
minutes of calls is given by the following. 23
\( C=25.00-0.07 x \)
How much credit is left on the card after Rafael uses it for 50 minutes of calis? 26
प dollars
Q:
(12) \( \begin{aligned} p-q-r & =4 \\ q-r-s & =-5 \\ r-s-p & =-8 \\ p+2 q+2 r+s & =-5\end{aligned} \)
Q:
\( x>-4 \) and \( x \leqslant-1 \)
Q:
Solve for \( B \)
\[ A=3 B+7 C \]
Q:
(12) \( \begin{aligned} p-q-r & =4 \\ q-r-s & =-5 \\ r-s-p & =-8 \\ p+2 q+2 r+s & =-5\end{aligned} \)
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