Find the axis of symmetry of the given function.g(x) = 4x2 - 8x + 9
A. x = 0
B. x = 5
C. x = -5
D. x = 1
Answer: D
Mathematics
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Find the exact value of the expression.cos 
cos 
- sin 
sin 
A. 0
B. 1
C. -1
D. 
Mathematics
Decide whether the equation is or is not an identity.sin 
= sin ? + cos ?
A. Identity B. Not an identity
Mathematics
Use the discriminant to decide whether the equation represents a parabola, an ellipse, or a hyperbola.8x2 - 5xy + 5y2 - 20 = 0
A. Ellipse B. Parabola C. Hyperbola
Mathematics
Find z1z2. Write the answer in polar form with the argument between 0° and 360°.z1 = 6(cos 40° + i sin 40°), z2 = 4(cos 17° + i sin 17°)
A. 24(cos 23° + i sin 23°) B. 10(cos 320° + i sin 320°) C. 24(cos 57° + i sin 57°) D. 10(cos 57° + i sin 57°)
Mathematics