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4个因式分解的除法(12abc-3bc^2)÷(4a-c)[m(a-3)+2(3-a)]÷(a-3)(12x^2-3y^2)÷(2x-y)(y^2+y+1/4)÷(y+1/2)
题目详情
4个因式分解的除法
(12abc-3bc^2)÷(4a-c)
[m(a-3)+2(3-a)]÷(a-3)
(12x^2-3y^2)÷(2x-y)
(y^2+y+1/4)÷(y+1/2)
(12abc-3bc^2)÷(4a-c)
[m(a-3)+2(3-a)]÷(a-3)
(12x^2-3y^2)÷(2x-y)
(y^2+y+1/4)÷(y+1/2)
▼优质解答
答案和解析
(12abc-3bc^2)÷(4a-c)
=3bc(4a-c)÷(4a-c)
=3bc
[m(a-3)+2(3-a)]÷(a-3)
=[m(a-3)-2(a-3)]÷(a-3)
=(m-2)(a-3)÷(a-3)
=m-2
(12x^2-3y^2)÷(2x-y)
=3(4x^2-y^2)÷(2x-y)
=3(2x+y)(2x-y)÷(2x-y)
=3(2x+y)
=6x+3y
(y^2+y+1/4)÷(y+1/2)
=(y+1/2)^2÷(y+1/2)
=(y+1/2)
=3bc(4a-c)÷(4a-c)
=3bc
[m(a-3)+2(3-a)]÷(a-3)
=[m(a-3)-2(a-3)]÷(a-3)
=(m-2)(a-3)÷(a-3)
=m-2
(12x^2-3y^2)÷(2x-y)
=3(4x^2-y^2)÷(2x-y)
=3(2x+y)(2x-y)÷(2x-y)
=3(2x+y)
=6x+3y
(y^2+y+1/4)÷(y+1/2)
=(y+1/2)^2÷(y+1/2)
=(y+1/2)
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