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4.What is the value of the expression
2x - 5 if x = 2?
A. 9 B. 1 C. -9 D. -1

5.What is the value of the expression,
[tex] \frac{x - 2}{x - 6} [/tex]
, if = 5?
A. -3 B. -2 C. 3 D. 4

6. If a and b are positive integers, which of the following is the greatest?
A. ab B. a + b C. a² + b² D.( a + b)²