A.a+b=0 | B.a+b=1 | C.a+b=2 | D.a+b=3 |
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A.3x-2x=1 | B.3x+2x=5x2 | C.3x•2x=6x | D.3x-2x=x |
A.
| B.x2+x3=x5 | ||||||
C.(-2)-2=-4 | D.6x3y2÷2xy2=3x2 |
A.-(-x+1)=x+1 | B.
| C.(a-b)2=a2-b2 | D.(
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A.m+(-n+x-y)=m+n+x-y | B.m-(-n+x-y)=m+n+x+y |
C.a-2(b+c)=a-2b+c | D.a-2(b-c)=a-2b+2c |
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