Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.cos (x + ?) = cos x
A. - 
B. 0
C. 
D. 
Answer: B
Mathematics
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Perform the indicated operations.(8x3 + 2x2) - (7x2 - 5x -1) - (6x3 + x - 5)
A. 14x3 - 9x2 + 4x - 6 B. 2x3 - 3x2 - 4x + 6 C. 2x3 - 5x2 + 4x + 6 D. 2x3 + 5x2 + 6x - 6
Mathematics
Find the distance d(A, B) between the points A and B.A = (4, 4); B = (4, -4)
A. 8
B. 7
C. 2
D. 9
Mathematics
Use Cramer's rule to solve the system of linear equations. 5x - 7y = 15-3x + 5y = -9
A. (3, 1) B. (3, 0) C. No solution D. (2, 1)
Mathematics
Provide an appropriate response.True or false: The solution of the equation 7y - 6 = 7y + 3 is zero.
What will be an ideal response?
Mathematics