Solve the quadratic equation and simplify your answer. Use i notation for any complex numbers.3x2 - 21 = 0
A. x = ± 
B. x = ± 
C. x = ±
D. x = 
Answer: C
Mathematics
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Use series to evaluate the limit.
A. - 96
B. - 
C. - 
D. - 
Mathematics
Rationalize the denominator.
A. 
B. 
C. 
D. 5
Mathematics
Find the slope and the y-intercept of the equation.-3x + 5y = -5
A. - 
; (0, 1)
B. -1
; (0, -1)
C. 1
; (0, 1)
D. 
; (0, -1)
Mathematics
Solve the equation. Give an exact solution.198 + 4 log x = 170
A. no solution B. -70 C. -107 D. 10-7
Mathematics