1. Вынесите общий множитель за скобки: a) \( 2 \mathrm{a}-4 \) б) \( 3 \mathrm{x}-2 \mathrm{x}^{2}+\mathrm{x}^{3} \) в) \( \mathrm{p}^{2} \mathrm{q}+\mathrm{pq}^{2} \) г) \( 5 \mathrm{~m}^{2} \mathrm{~b}-10 \mathrm{mb} \) д) \( 6 \mathrm{x}(\mathrm{x}-\mathrm{y})+\mathrm{y}(\mathrm{x}-\mathrm{y}) \) е) \( 5 \mathrm{c}+10 \) ж) \( 8 \mathrm{a}^{2}+3 \mathrm{a}-2 \mathrm{a}^{3} \) з) \( \mathrm{m}^{2} \mathrm{n}^{2}-m \mathrm{n}^{3} \) и) \( 7 \mathrm{x}^{2} \mathrm{y}^{3}-21 \mathrm{x}^{3} \mathrm{y}^{2} \)

15 Mark for Review \( \frac{x-18}{6}+\frac{y+25}{3}=-5 \) The solution to the given system of equations is \( (x, y) \). What is the value of \( x-y \) ?

3. How many solutions does the equation \( 5(x-2)=8+5 x \) have? A no solution B. one solution C. two solutions D. infinitely many solutions

15 Mark for Review \( \frac{x-18}{6}+\frac{y-18}{3}-\frac{y+25}{6}=5 \) The solution to the given system of equations is \( (x, y) \). What is the value of \( x-y \) ?

\( x^{2}+2 x y^{2}+y^{4} \) \( (x-y)^{2} \) \( 4 x^{2}-4 x+1 \) 2. \( 4 x^{3}-12 x^{2} y+9 x y^{2} \) \( \left(2 x^{2}-\right. \)

\( a+b=5, a \cdot b=1 \) olduguna göre, \( a^{2}+b^{2} \) toplaminı bulunuz. \( \left(\frac{a+b}{5}\right)=a^{2}+2 \cdot a \cdot b+b^{2} \)