Find the derivative.y = (csc x + cot x)(csc x - cot x)
A. y ' = 1
B. y ' = - csc x cot x
C. y ' = - csc2 x
D. y ' = 0
Answer: D
Mathematics
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Use grouping to factor the polynomial.5y3 - 15y2 + 2y - 6
A. (5y2 + 2)(y - 3) B. (5y2 + 2)(y + 3) C. (5y2 - 2)(y + 3) D. (5y2 - 2)(y - 3)
Mathematics
Solve the equation by completing the square.x2 + 5x - 5 = 0
A. 
B. {-5 - 3
, -5 + 3
}
C. 
D. 
Mathematics
Solve the problem.Find the measure of the unknown leg of this right triangle. Give its length in simplified radical form, and give a decimal approximation to the nearest thousandth. 
A. 2
; 18.868
B. 2
; 15.232
C. 4
; 12.649
D. 2
; 20.688
Mathematics
Find the sum of the sequence.
A. 5 B. 12 C. 84 D. 7
Mathematics