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. -2?
B. 0
C. 2?
D. 
Answer: D
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Determine the standard equation of the ellipse described.Foci at (-4, 2) and (-4, -4); length of major axis is 10 units.
A. 
+ 
= 1
B. 
+ 
= 1
C. 
+ 
= 1
D. 
+ 
= 1
Use synthetic division to divide.(6m3 + 7m2 - 6m + 8) ÷ (m + 2)
A. 6m2 + 5m + 4 B. m2 + 6m + 7 C. m2 + 5m + 6 D. 6m2 - 5m + 4
Rewrite the given expression as a single logarithm. Assume that all variables are defined in such a way that variable expressions are positive and bases are positive numbers not equal to 1.logw (x2 - 25) - logw (x - 5)
A. 
B. logw (x2 - 25)(x - 5)
C. logw 
D. logw (x + 5)
Find the slope-intercept form of the equation of the line with the given properties.Slope = -2; y-intercept = -8
A. y = -8x + 2 B. y = -2x + 8 C. y = -8x - 2 D. y = -2x - 8