CoolKid

YES I GOT It RIGHT THANKS SO MUCH MELODY!!!

Ok so I factored out each one:

$a(ab+c^2) + b^2c = ab^2 + bc^2 + ca^2$

and

$c(b^2 + ac) + a^2b = ab^2 + bc^2 + ca^2$

But how does this help me? Also thanks for you help. Really appreciate it!

https://web2.0calc.com/questions/help-pls-d

Why are you answering your own question?

Are you sure?

Please tell explanation.

Do you KNOW about the relationships of the angles in a rhombus? If so, this should be very trivial.

1. Opposite angles in a rhombus are the same

2. Adjacent angles in a rhombus add up to 180

3. Diagonals in a rhombus bisect the angles they are in.

Use this to find out angles 1, 2 and 3.

I think you need to use the law of cosines on this one.