A.4y2-1=(4y+1)(4y-1) | B.a4+1-2a=(a2-1)2 | ||||||||
C.
| D.16+a4=(a2+4)(a2-4) |
9 |
4 |
1 |
9 |
3 |
2 |
1 |
3 |
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) |
A.m2-4n2=(m+2n)(m-2n) | B.(m+1)(m-1)=m2-1 |
C.m2-3m-4=m(m-3)-4 | D.m2-4m-5=(m-2)2-9 |
A.3x2y-9xy2=3xy(x-3y) |
B.-6m3+9mb2-15mc2=-3m(2m2-3b2+5c2) |
C.2a2y+12a2y2-8ay=2ay(a+6ay) |
D.14pqx-8xpq2+6px=2px(7q-4q2+3) |
A.22002 | B.-22002 | C.-22003 | D.2 |
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