If x 2 – 4x + 1 = 0, then what is the value of x 9 + x 7 – 194x 5

| If x2 – 4x + 1 = 0, then what is the value of x9 + x7 – 194x5 – 194x3 ?
A. 4
B. -4
C. 1
D. -1
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Right Answer is: B
SOLUTION
Then