A.2a5 | B.2a6 | C.4a5 | D.4a6 |
A.a | B.a2 | C.a﹣1 | D.a﹣2 |
A.(a2)2=a4 | B.a+a=a2 | C.3a2÷a2=2a2 | D.a4﹣a3=a1 |
A.a(x﹣y)=ax﹣ay | B.x2+2x+1=x(x+2)+1 |
C.(x+1)(x+3)=x2+4x+3 | D.x3﹣x=x(x+1)(x﹣1) |
A.ab | B.(a+b)2 | C.(a﹣b)2 | D.a2﹣b2 |
A.(﹣4x)(2x2+3x﹣1)=﹣8x3﹣12x2﹣4x |
B.(x+y)(x2+y2)=x3+y3 |
C.(﹣4a﹣1)(4a﹣1)=1﹣16a2 |
D.(x﹣2y)2=x2+4y2﹣2xy |
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