If 1-4x+4x^2=0, then 2x equals

By guessing and checking, 2 works. 2x = 1

smc

algebra intermediate

Problem

1 - \frac{4}{x} + \frac{4}{x ^{2}} = 0

, then

\frac{2}{x}

equals

(A)

- 1

(B)

1

(C)

2

(D)

- 1 or 2

Solution

By guessing and checking, 2 works.

\frac{2}{x} = 1

Final answer