b. \( \frac{2 x}{x-4} \leq 1 \)

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

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 \( x-y \) ?

\( \sqrt{\frac{2}{a}}=\frac{1}{a} \sqrt{2 a} \).

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