$2$ Find the sum and product of
$x^{2}+7x+12=0$
$2$ $2$ 2 $2x^{2}-18=0$
$3$ $4x^{2}-2x+\dfrac {1} {4}=0$
$4$ $4/3x^{2}+4x+3=0$
$5$ $x^{2}+6x+9=0$
$a$ Find the roots of the following
$1$ $2$ 2 $x\left(x-10+25=0$ $2x^{2}=18$
Determine the solution set of th
$11$ $1$ $2$
$x^{2}+10x+21=0$ $x^{2}-2x-24=0$