Find the error and fix it (4 +6i)^2= (4)^2 + (6i)^2
= 16 + 36i^2
= 16+ (36)(-1)
= -20

Find the sum of 4x^{2} -4+6 and -7^{2} +3x+1

D(5, 7). e(4,3), and f(8, 2) form the vertices of a triangle. what is mzdef? oa. 30° ob. 45° oc. 60° od 90°

Ann and betty together have $60 ann has $9 more than twice betty’s amount how much money dose each have