Step 1a

Expanding the first term, we get:

2x(x) + 2x(4) - 3(x) - 3(4)

Simplifying further:

\$ 2x^2 + 8x - 3x - 12\$

Now, expanding the second term:

5(x + 2) = 5x + 5(2)

Simplifying: 5x + 10

Now let’s add the results of the first and second expansions:

\$ 2x^2 + 8x - 3x - 12 + 5x + 10 \$

Adding the like terms:

\$ 2x^2 + 10x - 2 \$

Explanation: We simplified the terms inside each bracket and then added similar terms together. This gave us the simple expression: \$ 2x^2 + 10x - 2 \$.