Give all solutions of the nonlinear system of equations, including those with nonreal complex components.5x2 + 3xy - 5y2 = -9 x2 - xy - y2 = -5
A. {(-1, -2), (1, 2), (2i, -i), (-2i, i)}
B. 
C. 
D. {(-1, 2), (1, -2), (2i, i), (-2i, -i)}
Answer: A
Mathematics
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Illustrate and find the product by the indicated method.A = {i, a} and B = {t, d, m}. Use a crossing-line pattern to find A × B.
A. {i, t} × {a, d} × {m} = 8
B. {i, a} × {t, d, m} = 6
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Solve the equation symbolically.
+ 
= 4
A. -2
B. 
, -2
C. 2, -2
D. 0
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Express the English phrase using an algebraic expression.8 more than 7 times a number x
A. 7(8 + x) B. 7x + 8 C. 8x + 7 D. 15x
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Use the vertical line test to determine whether or not the graph is a graph in which y is a function of x.
A. function B. not a function
Mathematics