Write the sum or difference as a product containing only sines and/or cosines.sin(4?) - sin(6?)
A. 2 cos(4?) cos(5?)
B. 2 sin(5?) cos ?
C. -2 sin ? cos(5?)
D. -2 sin ?
Answer: C
Mathematics
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Perform the addition or subtraction.(4x4 - 5x2) + (9x4 - 2x2)
A. 6x6 B. 6x12 C. 13x8 - 7x4 D. 13x4 - 7x2
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Decide whether the given replacement value is a solution of the given equation.Is - 
a solution to 8x = - 
?
A. Yes B. No
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Simplify the expression. Use positive exponents. Assume variables represent nonzero real numbers.
6
A. x12
B. 
C. 
D. x36
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Find the equation of the parabola corresponding to the given information.The parabola has focus ( 0 , -3 ) and directrix y = 3.
A. x = - 
y2
B. y = - x2
C. y = - 
x2
D. y = 
x2
Mathematics