Which polynomial is equal to (-3x^2+2x-3) subtracted from (x^3-x^2+3x)?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

50 points~ ! i have to turn this in tomarrow

12 out of 30 people chose their favourite colour as blue caculate the angle you would use for blue on a pie chart