Use a graphing calculator to solve the equation.x2 - x = 20
A. 4, 5
B. -4, 5
C. -4, -5
D. 1, 20
Answer: B
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Rotate the coordinate axes to change the given equation into an equation which has no cross product (xy) term. Identify the graph of the equation as a hyperbola, ellipse, parabola, a straight line, or parallel lines.5x2 + 6xy + 5y2 = 15
A. 8u2 + 2v - 15 = 0; Parabola B. 8u2 - 2v2 - 15 = 0; Hyperbola C. 8u2 + 2v2 - 15 = 0; Ellipse D. 8u2 + 2u - 15 = 0; Parallel lines
Find the sum of the geometric series.
Express the answer as a fraction.
A. 
B. 
C. 
D. 
Find the product of the complex numbers. Leave answer in polar form.z1 = 6(cos 39° + i sin 39°)z2 = 4(cos 12° + i sin 12°)
A. 10(cos 51° + i sin 51°) B. 10(cos 108° + i sin 108°) C. 24(cos 27° + i sin 27°) D. 24(cos 51° + i sin 51°)
Find the reciprocal of the number or algebraic fraction.
A. 
B. 
C. 
D. 