How do you simplify #(x + 2) ^ { 2} - 5x - ( x ^ { 2} - 13)#?
1 Answer
Explanation:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
That's the whole long expression.
First, I will focus on
So the first thing you have to do is to apply this rule.
So, using that rule on
Now we will simplify that expression. (
So,
But,
Now, stick it into the rest of the WHOLE expression.
Now we will focus on the rightmost side (
Distribute brackets/parentheses.
Now remember this:
In this case,
That means
Stick the whole expression together and you get
Wow. That's a long expression. Let's simplify it.
First, we need to group like terms.
You see the blue numbers/symbols?
Let's simplify those:
Now we can replace
So, the expression would be
Let's simplify the blue numbers/symbols again.
The final expression would be
Add the blue numbers:
Therefore,