Use the fundamental identities and appropriate algebraic operations to simplify the expression.sin4 x - cos4 x + cos2 x
A. sin2 x
B. cos2 x
C. 0
D. 1
Answer: A
Mathematics
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Show that the given shape will tile the plane. There may be more than one correct answer. If the figure does not tile the plane, state this.
?
What will be an ideal response?
Mathematics
Sketch a graph of f.f(x) = -4x2 + 3x
A. 
B. 
C. 
D. 
Mathematics
Solve the equation by completing the square.-5x2 - 4x - 4 = 0
A. 
B. 
, - 
C. 
D. 
Mathematics
Graph the parabola and label the vertex. Find the x-intercept.x = -4(y + 5)2 - 6
A. vertex (-6, -5), x-intercept (94, 0)
B. vertex (6, -5), x-intercept (106, 0)
C. vertex (-6, -5), x-intercept (-94, 0)
D. vertex (6, -5), x-intercept (-106, 0)
Mathematics