1. evaluate an algebraic expression 2xy-xyx, when x=1, y=2, z= -1.
A. 2 B. -2 C. 6 D. -6
2. what is the sum of 3x 2 + 4x -2, 2 x 2 - x + 2 and 3 x 2 -4 x -5?
A. 2 B.8x -1 C. 8 x 2 + x + 5
D. 8x 2 - x -5
A. 2 B. -2 C. 6 D. -6
2. what is the sum of 3x 2 + 4x -2, 2 x 2 - x + 2 and 3 x 2 -4 x -5?
A. 2 B.8x -1 C. 8 x 2 + x + 5
D. 8x 2 - x -5
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