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Evaluate each expression when a= -3, b=5, c=1, x=4, and y=7.
1) b2
2)-y2
3) 2a - 3b
4) 3x - 2y
5) 3b - ab + xy
Evaluate each expression when a= -3, b=5, c=1, x=4, and y=7.
1) b2
2)-y2
3) 2a - 3b
4) 3x - 2y
5) 3b - ab + xy
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Answer:
1. b2
=5(2)
=10
2. -y2
= -7(2)
= -14
3. 2a - 3b
= 2(-3) - 3(5)
= -6 -15
= -21
4.3x -2y
= 3(4) - 2(7)
=12 - 14
= -2
5.3b - ab +xy
=3(5) - (-3)(5) + (4)(7)
= 15 - (-15) + (28)
= 15 - 13
= 2
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