Perform the indicated operations and simplify. Assume that all variables represent positive real numbers.
+ 
- 
A. 0
B. 3
+3
+ 3
C. 2
+ 5
- 7
D. 3
+3
- 3
Answer: D
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A. y, y B. x, x C. x, y D. y, x
Examine the discriminant of each equation and determine the nature of the roots.x2 + 3x - 7 = 0
A. One real solution B. Two real solutions C. No real solutions
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