Find the product.(2x + 9y)2
A. 4x2 + 36xy + 81y2
B. 2x2 + 36xy + 81y2
C. 2x2 + 81y2
D. 4x2 + 81y2
Answer: A
Mathematics
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Solve the problem.Suppose that 
= -4. Find 
and 
.
A. -12; 4
B. -12; - 
C. -1; -4
D. 3; 4
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Test the equation for symmetry with respect to the specified axis, line, or pole.r = 3 + 6 sin ?; the x-axis (polar axis)
A. Symmetric about the x-axis B. May or may not be symmetric about the x-axis
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Write the equation as f(x) = a(x - h)2 + k. Identify the vertex.f(x) = 3x2 - 4x
A. f(x) = 3
2 - 
; 
B. f(x) = 3
2 - 
; 
C. f(x) = 3
2 - 
; 
D. f(x) = 3
2 - 
; 
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Indicate whether the value of x shown is a solution of the given inequality by answering true or false.Value of x: -2
Inequality: 2(x + 7) < 8
A. True B. False
Mathematics