If $x^{2}+x-1=0$ what is the value of $x^{4}+\frac{1}{x^{4}} ?$
(A) 1
(B) 5
(C) 7
(D) 9

Question ID - 156467 | SaraNextGen Top Answer

If $x^{2}+x-1=0$ what is the value of $x^{4}+\frac{1}{x^{4}} ?$
(A) 1
(B) 5
(C) 7
(D) 9