Use the given substitution to solve the equation.x4 - 3x2 + 2 = 0, u = x2
A. ±1, ±2
B. 1, 2
C. ±1, ± 
D. 2, 3
Answer: C
You might also like to view...
Solve the problem.If a graph is symmetric with respect to the y-axis and it contains the point (5, -6), which of the following points is also on the graph?
A. (-6, 5) B. (-5, 6) C. (5, -6) D. (-5, -6)
Solve the problem.If $2000 is invested in an account that pays interest compounded continuously, how long will it take to grow to $6000 at 5%?
A. 22.0 yr B. 19.5 yr C. 5.5 yr D. 12.0 yr
Graph the ellipse and locate the foci.
+ 
= 1
A. foci at (
, 0) and (-
, 0)
B. foci at (2
, 0) and (-2
, 0)
C. foci at (0, 
) and (0, -
)
D. foci at (
, 0) and (-
, 0)
Determine whether the Law of Sines or the Law of Cosine is needed to solve the triangle. Then solve the triangle. ? a = 18, b = 20, C = 65° ?
A. Law of Sines; A ? 65°, B ? 52.79°, c ? 20 B. Law of Sines; A ? 52.79°, B ? 65°, c ? 20 C. Law of Cosines; A ? 52.79°, B ? 62.21°, c ? 20.49 D. Law of Sines; No solution E. Law of Cosines; No solution