72 36-- - -------- - 11=(x-6)2(這個2還是平方)x x2(平方)
熱心網友
72/x -36/xx -11 =(x-6)^2顯然X=6 是一解(呵呵,這就要靠觀察了)72x-36-11xx=(x-6)^2xx-11(x-6)x+6(x-6)=(x-6)^2 xxx1=6-11x+6=(x-6)xx(x-3)xx-3(x-3)x+2(x-3)=0x2=3xx-3x+2=0x3=1x4=2所以四根:x1=6,x2=3,x3=1,x4=2
熱心網友
原方程變換,得-(x-6)(11x-6)=(x-6)^2移項,得 (x-6)(x^3-6x^2+11x-6)=0(x-6)[(x^3-6x^2+9x)+(2x-6)]=0(x-6)[x(x-3)^2+2(x-3)]=0(x-6)(x-3)(x^2-3x+2)=0(x-6)(x-3)(x-1)(x-2)=0方程的解分別為,x=6,3,1,2
熱心網友
解:原方程變換,得-(x-6)(11x-6)=(x-6)^2移項,得 (x-6)(x^3-6x^2+11x-6)=0(x-6)[(x^3-6x^2+9x)+(2x-6)]=0(x-6)[x(x-3)^2+2(x-3)]=0(x-6)(x-3)(x^2-3x+2)=0(x-6)(x-3)(x-1)(x-2)=0方程的解分別為,x=6,3,1,2,均符合原方程限制條件“x不等于0”。
熱心網友
72/x-36/x^2-11=(x-6)^2----11x^2+72x-36=x^2*(x-6)^2---x^2*(x-6)^2+(11x-6)(x-6)=0---(x-6)(x^3-6x^2+11x-6)=0---(x-6)[(x^3-x^2)-(5x^2-5x)+(6x-6)]=0---(x-6)(x-1)(x^2-5x+6)=0---(x-6)(x-1)(x-2)(x-3)=0---x1=1;x2=2'x3=3;x4=6