Set up an equation and solve each problem. Explain how you would solve the equation \(3(x - 1) (x + 2) = 0\) and also how you would solve the equation \(x(x - 1)(x + 2) = 0\).

Determine whether the given problem is an equation or an expression. If it is an equation, then solve. If it is an expression, then simplify. \(\displaystyle\frac{{{3}{h}}}{{4}}+\frac{{{2}{h}}}{{5}}={1}\)

What is the value of n such that the expression \(\displaystyle{x}^{{2}}+{11}{x}+{n}\) is a perfect square trinomial?

A. 11

B. 25

C. 30.25

D. 36