Melody

Thanks Alan, I had never seen that input bar before   

Anyway now, thanks to you and Zac, I have another cool tool!     

Do you know if you can put restrictions on the domain or range?

like can I graph y=x^2   for  -3<x<2   ?

5+4x=3

subtract 5 from both sides

5+4x-5=3-5

4x=-2

divide both sides by 4

4x/4=-2/4

x=-1/2

$$\\log_{16}4=\frac{2}{4}\\\\
4=16^{2/4}\\\\
$in other words$\\\\
4=16^{1/2}\\\\
4=\sqrt{16}$$

Thanks Titanium, your answer is good except that you have used the wrong symbol between the 21 and the 3.

The ^ is called a hat or a caret

That is a really good answer Thejamesmachine   

That is an excellent answer Zac  

Here is a video to reinforce what Zac has told you   

That is neat Alan  

This is a perfect square

$$x^2+2bx+b^2=(x+b)^2$$

Can you work out the answer to your own question now?

I don't know how to do this problems BUT are the b***s identical or different from one another?

That is an excellent answer anon