Question

Least common multiple of z^2+6z+9 and z^2+z-6

Answer 1

Hint:    $\bf \begin{array}{ccllll} z^2+6z+9&z^2+z-6\\ \downarrow &\downarrow \\ (z+3)(z+3)&\underline{(z+3)(z-2)} \end{array}$