Question

Multiply ( y/6 - 8) (y/6 + 8)

Answer 1

Answer: $\frac{y^2}{36}-64$

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.

$(a+b)(a-b)=a^2-b^2$

Therefore;

$(\frac{y}{6}-8) (\frac{y}{6}+8) =(\frac{y}{6}) ^2-(8)^2=\frac{y^2}{36}-64$