4 |
5 |
1 |
5 |
8 |
5 |
4 |
5 |
1 |
5 |
8 |
5 |
A.4y2-1=(4y+1)(4y-1) | B.a4+1-2a=(a2-1)2 | ||||||||
C.
| D.16+a4=(a2+4)(a2-4) |
A.9x2-4y2=(3x+2y)(3x-2y) | B.-x2+4xy-4y2=-(x-2y)2 |
C.4a2b3+6ab2=2ab2(2ab+3) | D.x4-16=(x2+4)(x2-4) |
A.ab(a2b2-ab2-1) | B.ab(a2b2-ab2) |
C.a(a2b3-ab3-b) | D.b(a3b2-a2b2-a) |
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