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Worksheets8上1-1乘法公式
Total questions: 7
Worksheet time: 2mins
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Worksheets(a+b)2=
a2+b2
a2+2ab+b2
a2−2ab+b2
a2−b2
(a−b)2=
a2+2ab+b2
a2+b2
a2−b2
a2−2ab+b2
(a+b)(a−b)= ?
a2+b2
a2−b2
a2+2ab+b2
a2−2ab+b2
a2−b2= ?
(a+b)(a−b)
a2+b2
(a−b)2
(a+b)2
2332−332= ?
(233−33)2
(233+33)2
(233+33)(233−33)
2662
(100+5)2 依公式展開是?
1002+52
1002+100⋅5+52
1002−2⋅100⋅5+52
1002+2⋅100⋅5+52
(200−4)2 依公式展開是?
2002−42
2002−2⋅200⋅4−42
2002−2⋅200⋅4+42
2002+2⋅200⋅4+42
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