Which equations have a leading coefficient of 3 and a constant term of -2? Check all that apply. 0 = 3.x2 + 2x - 2
0= -2- 3.2 + 3
0= -3x + 3.2-2.
0= 3.2 + x + 2
0= -1.x - 2 + 3.2
PLEASE HELLL

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b