Simplify the folowing expresions.
a. (4 − 2i)(5 − 3i)
b. (−2 + 3i)(−2 − 3i)
c. (1 + i)2
d. (1 + i)10 (hint: bn = (bn)mm)
e. −1 + 2i
1 − 2i
f. x2 + 4
x − 2i , provided x ≠ 2i

is there any photos or whatever?

the answer is a if my teacher taught me correct

60°

step-by-step explanation:

the measure angle of c in an isosceles triangle abc is 60° because in isosceles triangle,the measures of all the angles is 60°.

answer: none of these answers are correct only the second half is

step-by-step explanation: