Solve the equation.x4 - 8x2 - 9 = 0
A. {3i, -3i, i, -i}
B. {3, -3, 1, -1}
C. {3, -3, i, -i}
D. {1, -1, 3i, -3i}
Answer: C
Mathematics
You might also like to view...
Simplify the expression. First use the distributive property to remove any parentheses.-8(r + 8)
A. -8r - 64 B. -8r - 8 C. r - 64 D. -8r + 64
Mathematics
Solve the inequality.49x2 + 25 < 70x
A. 
B. No real solution
C. 
D. 
Mathematics
Find the circumference and area of a circle having the given diameter or radius. Use 3.14 for ?. Round your results to the nearest tenth.d = 7 mi
A. 22.0 mi; 22 mi2 B. 11.0 mi; 153.9 mi2 C. 11.0 mi; 44 mi2 D. 22.0 mi; 38.5 mi2
Mathematics
Use factoring techniques to solve the quadratic equation.18x2 + 45x + 6 = -19
A. 
B. 
C. 
D. 
Mathematics