You have two binomials. I would just FOIL them:
First: 4 x 2 = 8
Outside: 4 (-√3) = -4√3
Inside: -3√3 (2) = -6√3
Last: -3√3 (-√3) = 9
Addummup: 8 - 4√3 - -6√3 + 9 = 17 - 10√3
Parenthesis are something you can use in math problems that mean anything inside of them is what you have to solve first. In PEMDAS P is parenthesis which means that is first.
Can you clarify or add a picture?
The answer to your problem is........... 60..... i think :)
Answer:
The solution for x that I got is 7.6.
When substituted for x for the two equations, the angle measures are:
86, 38.4, and 55.6.
86 degrees is the largest angle measure.