I can't figure out the value of a- please help! (6y - 11)(6y + 11)=ay^2 - b)

Guest Feb 12, 2017

(6y - 11)(6y + 11)


All you need to do is "FOIL" this expression. That means multiply the First two terms  of each factor together, multiply the Outer two terms of each factor together, multiply the Inner two terms of each factor together, and multiply the Last two terms of each factor together. Then add each of those products together.

You can also think of this by saying,"The first term times the third and fourth term plus the second term times the third and fourth term." All this is doing is getting you to multiply each thing by every other thing.

So for this problem that will be:


= (6y)(6y) + (11)(6y) + (-11)(6y) + (-11)(11)


= 36y2 + 66y - 66y - 121


= 36y2 - 121


Now you can see that a = 36.

hectictar  Feb 12, 2017

14 Online Users

New Privacy Policy

We use cookies to personalise content and advertisements and to analyse access to our website. Furthermore, our partners for online advertising receive information about your use of our website.
For more information: our cookie policy and privacy policy.