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因式分解5A(A-B)^2-15AB(B-A)^336a(a-b+c)+12b(b-a-c)9/4m^2-2/3m+1/4(a+b)^2-2(a+b)c+c^25m^2(m-n)-10mn(n-m)
题目详情
因式分解
5A(A-B)^2-15AB(B-A)^3 36a(a-b+c)+12b(b-a-c) 9/4m^2-2/3m+1/4 (a+b)^2-2(a+b)c+c^2 5m^2(m-n)-10mn(n-m)
5A(A-B)^2-15AB(B-A)^3 36a(a-b+c)+12b(b-a-c) 9/4m^2-2/3m+1/4 (a+b)^2-2(a+b)c+c^2 5m^2(m-n)-10mn(n-m)
▼优质解答
答案和解析
5A(A-B)2-15AB(B-A)3
=5A(A-B)2(1+3A2-3AB)
36a(a-b+c)+12b(b-a-c)
=12(a-b+c)(3a-b)
9/4m2-3/2m+1/4
=(3/2m-1/2)2
(a+b)2-2(a+b)c+c2
=(a+b-c)2
5m2(m-n)-10mn(n-m)
=5m(m-n)(m+2n)
=5A(A-B)2(1+3A2-3AB)
36a(a-b+c)+12b(b-a-c)
=12(a-b+c)(3a-b)
9/4m2-3/2m+1/4
=(3/2m-1/2)2
(a+b)2-2(a+b)c+c2
=(a+b-c)2
5m2(m-n)-10mn(n-m)
=5m(m-n)(m+2n)
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