Solve.x2 - 4x + 3 > 0
A. (1, 3)
B. (-?, 1) ? (3, ?)
C. (-?, 1)
D. (3, ?)
Answer: B
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Use the discriminant to find what type of solutions (two rational, two irrational, one rational, or two nonreal complex) each of the following equations has. Do not solve the equation.6x2 = -6x - 7
A. two nonreal complex solutions B. two irrational solutions C. one rational solution D. two rational solutions
Use the elimination method by addition to find the solution for the following system.
A. x = 0, y = 0, z = 0 B. x = 4, y = 4, z = -1 C. x = -1, y = -2, z = -9 D. The system is inconsistent.
Find the exact value of the expression.tan 165°
A. 2 + 
B. 
C. -2 - 
D. 
Solve the system of equations using Gaussian elimination or Gauss-Jordan elimination.6x + 3y + 2z = 4-12x - 6y - 4z = -86x + 12y + 6z = 6
A. 
B. 
C. 
D. No solution