I am sorry but I do not know but if someone else know help
5x^4 - 3x^3 + 6x - (3x^3 + 11x^2 - 8x) =
5x^4 - 3x^3 + 6x - 3x^3 - 11x^2 + 8x =
5x^4 -6x^3 - 11x^2 + 14x <== yep, I got the same thing
Answer: The angles are 30 30, 150, 150
Step-by-step explanation: Two lines intersect means they cross. According to the vertical angle theorem, angles that are across are the same, a line is 180 degrees so it means the angles that make up the supplementary pair add up to 180(180-30=150). So there are 2 150 degree angles and 2 30 degree angles
-root 3*63x^2 is the answer you want
