摘要:8ab - { 4a - 3[ 6ab + 5 - 7a ] – 2 }
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(1)单项式-12x12y3与8x10y6的公因式是
(2)3ab4-6ab3+9ab2各项的公因式是
(3)-4a2b+8ab-4a各项的公因式是
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4x10y3
4x10y3
;(2)3ab4-6ab3+9ab2各项的公因式是
3ab2
3ab2
;(3)-4a2b+8ab-4a各项的公因式是
-4a
-4a
.