解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)
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解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)
解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)
解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1)
2.(x-3)(x+3)-(3x+1)²=8x(5-x)
解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)解下列方程1.(x-7)(x+9)+2x(x-5)=(3x-4)(x-1) 2.(x-3)(x+3)-(3x+1)²=8x(5-x)
1、
x²+2x-63+2x²-10x=3x²-7x+4
3x²-8x-63=3x²-7x+4
x=-67
2、
x²-9-9x²-6x-1=40x-8x²
-8x²-6x-10=40x-8x²
46x=-10
x=-5/23
x=59 x=-10/46
1、(x-7)(x+9)+2x(x-5)=(3x-4)(x-1)
x²-7x+9x-63+2x²-10x=3x²-3x-4x+4
3x²-8x-63=3x²-7x+4
x=-67
2、(x-3)(x+3)-(3x+1)²=8x(5-x)
x²-9-9x²-6x-1=40x-8x²
-8x²-6x-10=40x-8x²
x=-4.6
1.X²+2X-63+2X²-10X=3X²-7X+4
X=-67
2.X²-9-9X²-6X-1=40X-8X²
X=-9/46