Answer: [tex]\frac{y^2}{36}-64[/tex]
Step-by-step explanation:
First you need to know this property in order to understand what I'm doing.
If you have a and b multiplied by each other with different signs, simply square both a and b and put a negative sign in the middle, like this.
[tex](a+b)(a-b)=a^2-b^2[/tex]
Therefore;
[tex](\frac{y}{6}-8) (\frac{y}{6}+8) =(\frac{y}{6}) ^2-(8)^2=\frac{y^2}{36}-64[/tex]
