因式分解:4(m-n)^2+16(n-m); -3a^3+12a^2b-12ab^3解方程:9x^2=(x-2)^2 9a^2-36=0 (5k-1)^2=(2-3k)^2
来源:学生作业帮助网 编辑:六六作业网 时间:2024/11/22 17:43:02
因式分解:4(m-n)^2+16(n-m); -3a^3+12a^2b-12ab^3解方程:9x^2=(x-2)^2 9a^2-36=0 (5k-1)^2=(2-3k)^2
因式分解:4(m-n)^2+16(n-m); -3a^3+12a^2b-12ab^3
解方程:
9x^2=(x-2)^2
9a^2-36=0
(5k-1)^2=(2-3k)^2
因式分解:4(m-n)^2+16(n-m); -3a^3+12a^2b-12ab^3解方程:9x^2=(x-2)^2 9a^2-36=0 (5k-1)^2=(2-3k)^2
4(m-n)^2+16(n-m)
=4(m-n)^2-16(m-n)
=4(m-n)(m-n-4)
-3a^3+12a^2b-12ab^3
=-3a(a^2-4ab+4b^2)
=-3a(a-2b)^2
9x^2=(x-2)^2
(3x)^2-(x-2)^2=0
(3x+x-2)(3x-x+2)=0
(4x-2)(2x+2)=0
x1=1/2,x2=-1
9a^2-36=0
9(a^2-4)=0
a^2-4=0
a^2=4
a1=2,a2=-2
(5k-1)^2=(2-3k)^2
(5k-1-2+3k)(5k-1+2-3k)=0
(8k-3)(2k+1)=0
k1=3/8,k2=-1/2
4(m-n)^2+16(n-m)=4(m-n)(m-n+4)
-3a^3+12a^2b-12ab^3=-3a(a^2-4ab+4b^3)
解方程:
9x^2=(x-2)^2
9x^2-(x-2)^2=0
(3x+x-2)(3x-x+2)=0
x1=0.5,x2=-1
9a^2-36=0
9a^2=36
a^2=4
全部展开
4(m-n)^2+16(n-m)=4(m-n)(m-n+4)
-3a^3+12a^2b-12ab^3=-3a(a^2-4ab+4b^3)
解方程:
9x^2=(x-2)^2
9x^2-(x-2)^2=0
(3x+x-2)(3x-x+2)=0
x1=0.5,x2=-1
9a^2-36=0
9a^2=36
a^2=4
a1=2,a2=-2
(5k-1)^2=(2-3k)^2
(5k-1)^2-(2-3k)^2=0
[(5k-1)+(2-3k)][(5k-1)-(2-3k)]=0
(2k+1)(8k-3)=0
k1=-0.5,k2=3/8
收起