用分解因式法来解下列方程(1)4(y-3)²-2(y-3) (2)x²-10x-75=0 (3)x²-x-6=0 (4)(x-2)²-5(x-2)=0 (5)(x-m)²-n(x²-m²)=0(n≠0) (6)(3+2)²-4(x-3)²
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![用分解因式法来解下列方程(1)4(y-3)²-2(y-3) (2)x²-10x-75=0 (3)x²-x-6=0 (4)(x-2)²-5(x-2)=0 (5)(x-m)²-n(x²-m²)=0(n≠0) (6)(3+2)²-4(x-3)²](/uploads/image/z/5300108-44-8.jpg?t=%E7%94%A8%E5%88%86%E8%A7%A3%E5%9B%A0%E5%BC%8F%E6%B3%95%E6%9D%A5%E8%A7%A3%E4%B8%8B%E5%88%97%E6%96%B9%E7%A8%8B%EF%BC%881%EF%BC%894%EF%BC%88y-3%EF%BC%89%26%23178%3B-2%EF%BC%88y-3%EF%BC%89+%EF%BC%882%EF%BC%89x%26%23178%3B-10x-75%3D0+%EF%BC%883%EF%BC%89x%26%23178%3B-x-6%3D0+%EF%BC%884%EF%BC%89%EF%BC%88x-2%EF%BC%89%26%23178%3B-5%EF%BC%88x-2%EF%BC%89%3D0+%EF%BC%885%EF%BC%89%EF%BC%88x-m%EF%BC%89%26%23178%3B-n%EF%BC%88x%26%23178%3B-m%26%23178%3B%EF%BC%89%3D0%EF%BC%88n%E2%89%A00%EF%BC%89+%EF%BC%886%EF%BC%89%EF%BC%883%2B2%EF%BC%89%26%23178%3B-4%EF%BC%88x-3%EF%BC%89%26%23178%3B)
用分解因式法来解下列方程(1)4(y-3)²-2(y-3) (2)x²-10x-75=0 (3)x²-x-6=0 (4)(x-2)²-5(x-2)=0 (5)(x-m)²-n(x²-m²)=0(n≠0) (6)(3+2)²-4(x-3)²
用分解因式法来解下列方程
(1)4(y-3)²-2(y-3) (2)x²-10x-75=0 (3)x²-x-6=0 (4)(x-2)²-5(x-2)=0 (5)(x-m)²-n(x²-m²)=0(n≠0) (6)(3+2)²-4(x-3)²=0 (7)x²-6x+9=(5+2x)²
用分解因式法来解下列方程(1)4(y-3)²-2(y-3) (2)x²-10x-75=0 (3)x²-x-6=0 (4)(x-2)²-5(x-2)=0 (5)(x-m)²-n(x²-m²)=0(n≠0) (6)(3+2)²-4(x-3)²
等我给你发图.顺便说一下,第一个不是方程……
(2)得(x-15)(x+5)=0
x=15 or x=-5
(2)x²-10x-75=0
(x-15)(x+5)=0
x1=15 x2=-5
(3)x²-x-6=0
(x-3)(x+2)=0
x1=3 x2=-2
(4)(x-2)²-5(x-2)=0
(x-2)(x-...
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(2)x²-10x-75=0
(x-15)(x+5)=0
x1=15 x2=-5
(3)x²-x-6=0
(x-3)(x+2)=0
x1=3 x2=-2
(4)(x-2)²-5(x-2)=0
(x-2)(x-2-5)=0
x1=2 x2=7
(5)(x-m)²-n(x²-m²)=0(n≠0)
(x-m)[(x-m)-n(x+m)=0
x-m=0 x-m-nx-nm=0
x1=m (1-n)x=m(1+n)
x2= m(1+n)/ (1-n)
(6)(3+2)²-4(x-3)²=0
4(x-3)^2=5^2
2(x-3)=5
2x-6=5
x=11/2
(7)x²-6x+9=(5+2x)²
(x-3)^2=(5+2x)^2
x-3=5+2x
x=-8
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