Solve for \( x \) \( \begin{array}{ll}1.1 .1 & x=\frac{4}{x}+3 \\ 1.1 .2 & 2 x^{2}=-x+5 \text { (Are the roots real or Unreal) } \\ 1.1 .3 & x^{2}-x+6<2(x+2)\end{array} \)

20. Solve the equation for \( x \). \[ \log _{x} 3=\frac{1}{2} \] \( x=9 \) (Type an integer or a simplified fraction.)

Determina x si \( 5^{x+1} = 125 \)

e length of a rectangle is 6 cm more than the breadth. If the perimeter of t tangle is 80 cm , find the length and the breadth of the rectangle.

7) \( (-2)^{2}:(-2)+(-3)^{2}-\left[(-2)^{2} \cdot(-2)^{6}\right]:(-2)^{5} \)

Q.24) Simplify the expression: \( 2(a-b)^{2}+3\left(a^{2}-b^{2}\right)-\left(a^{2}-2 a b+b^{2}\right) \) and find its valu when \( a=-1 \) and \( b=2 \).