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A.4x-9x+6x=-x | B.x3-x2=x | ||||
C.
| D.xy-2yx=3xy |
A.3a2-2a2=1 | B.5-2x3=3x3 |
C.3x2+2x3=5x5 | D.a3+a3=2a3 |
A.a+(a-b+c)=2a-b+c | B.a-(a-b+c)=b-c |
C.a-(-a+b-c)=c-b | D.a-(a-b-c)=c+b |
1 |
3 |
A.3x+2y=5xy | B.3m2n+4mn2=7m2n2 |
C.-x2-x2=0 | D.6a-7a=-a |
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