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1.m^2+mn+1/4n^22.-x^2-4y^2+4xy3.a^2b^2+ab+1/44.1/9-1/3x^2+1/4x^45.16（a+b）^2-9(a-b)^26.1.2222^2×2-1.3333^2×47.a^2-2ab+b^2-c^2因式分解
题目详情
1.m^2+mn+1/4n^2
2.-x^2-4y^2+4xy
3.a^2b^2+ab+1/4
4.1/9-1/3x^2+1/4x^4
5.16（a+b）^2-9(a-b)^2
6.1.2222^2×2-1.3333^2×4
7.a^2-2ab+b^2-c^2
因式分解
2.-x^2-4y^2+4xy
3.a^2b^2+ab+1/4
4.1/9-1/3x^2+1/4x^4
5.16（a+b）^2-9(a-b)^2
6.1.2222^2×2-1.3333^2×4
7.a^2-2ab+b^2-c^2
因式分解
▼优质解答
答案和解析
1 (m+1/2n)^2
2-(x-2y)^2
3 (ab+1/2)^2
4 (1/3-1/2x^2)^2
5 (4(a+b)+3(a-b))(4(a+b)-3(a-b))=(7a+b)(a+7b)
6 (1.2222×2^(1/2)-2.6666)×(1.2222×2^(1/2)+2.6666)
7 (a-b)^2-c^2=(a-b+c)(a-b-c)
2-(x-2y)^2
3 (ab+1/2)^2
4 (1/3-1/2x^2)^2
5 (4(a+b)+3(a-b))(4(a+b)-3(a-b))=(7a+b)(a+7b)
6 (1.2222×2^(1/2)-2.6666)×(1.2222×2^(1/2)+2.6666)
7 (a-b)^2-c^2=(a-b+c)(a-b-c)
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