A.x2-y | B.x2+2x | C.x2+y2 | D.x2-xy+y2 |
A.12abc-9a2b2c2=3abc(4-3ab) |
B.3x2y-3xy+6y=3y(x2-x+2y) |
C.-a2+ab-ac=-a(a-b+c) |
D.x2y+5xy-y=y(x2+5x) |
A.-m2+4 | B.-x2-y2 | C.x2y2-1 | D.(m-a)2-(m+a)2 |
A.a2-b2 | B.-x2-y2 |
C.49x2-y2z2 | D.16m4n2-25p2 |
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