Rationalize the denominator.
A. 
B. 1 + 
C. 
D. 
Answer: D
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Express the number in scientific notation.0.000315
A. 3.15 × 10-3 B. 3.15 × 104 C. 3.15 × 10-4 D. 3.15 × 10-5
Given the polynomial function f(x), find the rational zeros, then the other zeros (that is, solve the equation 
), and factor f(x) into linear factors.f(x) = x3 - 4x2 + 9x - 10
A. 2, 1 + 
, 1 - 
; f(x) = (x - 2)(x - 1 - 
)(x - 1 +
)
B. -2, 1 + 2i, 1 - 2i; f(x) = (x + 2)(x - 1 - 2i)(x - 1 + 2i)
C. 2, 1 + 2i, 1 - 2i; f(x) = (x - 2)(x - 1 - 2i)(x - 1 + 2i)
D. 2, -1 + 2i, -1 - 2i; f(x) = (x - 2)(x + 1 - 2i)(x + 1 + 2i)
Solve the system by the addition method.y2 + 3x2 = 17y2 - x2 = 1
A. (3, 
), (3, -
), (-3, 
), (-3, -
)
B. (3, 
), (3, -
)
C. (2, 
), (2, -
), (-2, 
), (-2, -
)
D. (2, 
), (2, -
)
Factor.(s + 3)3 - 27
A. s(s + 3)(s - 9) B. s(s2 - 9s + 27) C. s(s2 + 9s + 27) D. (s - 3)( s2 - 9s + 27)