The equation is
.
Case 1: If a = b,Then
\
Case 2: If a =
b, Then

(Product of two same signs is positive)
Solve equation for case 1.
\
Apply subtraction property of equality: Subtract 5 from each side.
\
(Apply additive inverse property:
)
(Subtract:
)
Apply multiplication property of equality: Multiply each side by 2.
\
(Cancel common terms)
(Multiply:
)
Solve equation for case 2.
\
Apply subtraction property of equality: Subtract 5 from each side.
\
(Apply additive inverse property:
)
(Subtract:
)
Apply multiplication property of equality: Multiply each side by 2.
\
(Cancel common terms)
(Multiply:
)
Graph the solution on a number line.
The equality solution set is {
4 or
16}.