A.(
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B.(
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C.(3x2+5)(3x2-5)=9x4-25 | ||||||||||||
D.101×99=(100+1)(100-1)=10000-1=9999 |
3 |
5 |
4 |
5 |
3 |
5 |
4 |
5 |
3 |
5 |
4 |
5 |
9 |
25 |
16 |
25 |
A.①③ | B.①④ | C.①② | D.②③ |
A.(a-b)(-a+b) | B.(x4-y4)(x4+y4) | C.(-x-y)(x-y) | D.(a3-b3)(b3+a3) |
A.1 | B.-1 | C.2 | D.-2 |
A.(x+4y)(x2-4xy+16y2)=x3+64y3 |
B.(2x+y)(4x2-2xy+y2)=8x3+y3 |
C.(a+1)(a2+a+1)=a3+1 |
D.x3+27=(x+3)(x2-3x+9) |
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