If arc bc = 30°, arc ab = 120°, and arc cd = 120°, what is the measure of ∠apd?

The ksp expression for the system pbcl2(s) pb+2(aq) + 2 cl-(aq) is: [pbc12][pb+2][2cl-] [pb+2][cl-]2 [pb+2][2cl-]2 [pbcl2][pb+2][cl-]2 [pb+2][2cl-]2[pbcl2]

10 points? me . its important ‼️‼️

Factor 15x^3 - 5x^2 +6x-2 by grouping. what is the resulting expression