Show that the equation is not an identity by finding a value of x for which both sides are defined but not equal.cos 2x + cos 6x = 2 cos 4x cos x
A. 0
B. 
C. -2?
D. 2?
Answer: B
Mathematics
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Use polar coordinates to find the limit of the function as (x, y) approaches (0, 0).f(x, y) = 
A. 0 B. ? C. 1 D. No limit
Mathematics
Solve for the variable.
x - 
= -3
A. x = 7 B. x = -7 C. x = 5 D. x = -5
Mathematics
Provide an appropriate response.Write an expression that represents the area of the figure and simplify.
What will be an ideal response?
Mathematics
Simplify. Assume that no radicands were formed by raising negative quantities to even powers.4
+ 7
A. 55
B. 11
C. 11
D. 28
Mathematics