

Multiply both numerator and denominator of
by the complex conjugate of the denominator, -2+9i.

Multiplication can be transformed into difference of squares using the rule:
.

By definition, i² is -1. Calculate the denominator.

Multiply complex numbers 5-3i and -2+9i in the same way as you multiply binomials.

Do the multiplications in
.

Combine the real and imaginary parts in -10+45i+6i+27.

Do the additions in
.

Divide 17+51i by 85 to get
.

The real part of
is
.

Answer is shown in the picture
Answer:
x = 52
Step-by-step explanation:
<I = < K b/c of corresponding angles thm
x + 66 + 62 = 180
x + 128 = 180
x = 52
Answer:
26.4
Step-by-step explanation: