Step 1. <span>Gather like terms
</span>
<span>
Step 2. </span><span>Use </span>Product Rule:
Step 3. Simplify brackets
Step 4. Simplify
to 
<span><span><span>7+5{x}^{2}-10</span><span /></span></span>
</span>
<span>
Step 2. </span><span>Use </span>Product Rule:
Step 3. Simplify brackets
Step 4. Simplify
<span><span><span>7+5{x}^{2}-10</span><span /></span></span>