1) The product of all the real roots of $x^{2}-8x+9-\frac{8}{x}+\frac{1}{x^{2}}=0$ is A) 2 B) 1 C) 3 D) 7 Answer: Option BExplanation:We have $x^{2}-8x+9-\frac{8}{x}+\frac{1}{x^{2}}=0$ $\Rightarrow$ $x^{4}-8x^{3}+9x^{2}-8x+1=0$ Product of roots =1
