Provide an appropriate answer.Let A = 
and B = 
. Show that A(A + B) = A2 + AB. Show all your work.
What will be an ideal response?
Answers may vary. One possible solution follows.
Left-hand side:
A(A + B) = 
= 
= 
Right-hand side:
A2 + AB = 
+ 
= 
+ 
= 
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Write the complex number in polar form.5j
A. 
(cos 0° + j sin 0°)
B. 5(cos 90° + j sin 90°)
C. 
(cos 90° + j sin 90°)
D. 5(cos 0° + j sin 0°)
If possible, find the slope of the line passing through the two points.(-1, 0), (0, -5)
A. - 
B. - 5
C. 
D. 5
Use the graph to determine the domain and range of the function. 
A. domain: all real numbers range: all real numbers B. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y ? 1} C. domain: {x|x ? 0 or x > 1} range: {y|y ? -3, y ? 3} D. domain: {x|x ? -3, x ? 3} range: {y|y ? 0 or y > 1}
Use a half-angle identity to find an exact value for the following, given the information about x. Find tan 
, given that sin x = - 
and x terminates in 180° < x < 270°.
A. 
B. - 7
C. - 
D. - 