2:D
3:D
4:D
5:4b negative 5/6 m quadratic n quadratic
6:-a +b-c
7:2x? -x+ 1
8:-3/ 1
9:-ab (7th power)
10: 1 1y-92a-x- 1-32x- 1 1- 13x? + 10x- 1 a? +5a+4
1 1:B
12:B
13:45
14: 15XY-6X-9 Y=0.4
2A? -ab+ 17b?
17:a-(2/ 1a-2)-[3/2(2/ 1)+ 1]+6/ 1a-3/ 1 3/299
18:a+3.5 Original formula =-24
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