Question

(b) If x = 3 + 2i , then prove that x4 – 4x3 + 4x2 + 8x + 39 = 0​

Answer 1

Answer:

Step-by-step explanation:

x=3+2i

x-3=2i

(x-3)²=-4

x²-6x+13 =0

X^4-4x³+4x²+8x+39

=x²(x²-6x+13)+2x(x²-6x+13)+3(x²-6x+13)

=x²(0)+2x(0)+3(0)

=0