A.x2-4=(x+2)(x-2) | B.1-(x+2)2=(x+1)(x+3) | ||||||
C.2m2n-8n3=2n(m2-4n2) | D.x2-x+
|
1 |
4 |
1 |
2 |
A.(x-1)2 | B.(x+1)2 | C.-(x+1)(x-1) | D.(x+1)(x-1) |
A.a(a+4b)(a-4b) | B.a(a2-4b2) | C.a(a+2b)(a-2b) | D.a(a-2b)2 |
A.a4-8a2+16=(a-4)2 | B.-a2+a-
| ||||
C.x(a-b)-y(b-a)=(a-b)(x-y) | D.a4-b4=(a2+b2)(a2-b2) |
A.x2-(-y2) | B.4x2+2xy+y2 | C.-x2+4y2 | D.x2-2xy-y2 |
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