Since its already factored, use the Zero Product Property to solve.

$x=\frac{1}{5}\text{ or }-3$

Factor out a 2 from the equation, then factor the quadratic.

Once factored, see part (a).

Multiply throughout by 2 to remove the decimals.

Factor and use the Zero Product Property to solve.
$\left(x + 3\right)\left(x + 3\right) = 0$
$x = −3$

Subtract 14 from both sides, then factor.

Once factored, see parts (a) and (c) for more help.

$x = 2 \text{ or } −7$