Answer:
[tex]2a^2-a-2[/tex]
Step-by-step explanation:
We can write this problem in algebraic form as:
[tex](a^{2} -5)-(a^{2} +a-3[/tex]
First, remove all of the terms from parenthesis. Be careful to handle the signs of each individual term correctly:
[tex]3a^{2} -5-a^{2} -a+3[/tex]
Next, group like terms:
[tex]3a^{2} -a^{2} -a-5+3[/tex]
Now, combine like terms:
[tex]3a^2-1a^2-a-5+3\\(3-1)a^2-a+(-5+3)\\2a^2-a+(-2)\\2a^2-a-2[/tex]
