设X1,x2是方程2x²-8X+5=0的两个根,不解方程求出下列各式的值(1)x1²x2+x1x2² (2)(x2/x1+1)(x1/x2+1)(x2/x1+1)+(x1/x2+1)
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![设X1,x2是方程2x²-8X+5=0的两个根,不解方程求出下列各式的值(1)x1²x2+x1x2² (2)(x2/x1+1)(x1/x2+1)(x2/x1+1)+(x1/x2+1)](/uploads/image/z/5248426-58-6.jpg?t=%E8%AE%BEX1%2Cx2%E6%98%AF%E6%96%B9%E7%A8%8B2x%26%23178%3B-8X%2B5%3D0%E7%9A%84%E4%B8%A4%E4%B8%AA%E6%A0%B9%2C%E4%B8%8D%E8%A7%A3%E6%96%B9%E7%A8%8B%E6%B1%82%E5%87%BA%E4%B8%8B%E5%88%97%E5%90%84%E5%BC%8F%E7%9A%84%E5%80%BC%EF%BC%881%EF%BC%89x1%26%23178%3Bx2%2Bx1x2%26%23178%3B+%EF%BC%882%EF%BC%89%28x2%2Fx1%2B1%29%28x1%2Fx2%2B1%29%28x2%2Fx1%2B1%29%2B%28x1%2Fx2%2B1%29)
设X1,x2是方程2x²-8X+5=0的两个根,不解方程求出下列各式的值(1)x1²x2+x1x2² (2)(x2/x1+1)(x1/x2+1)(x2/x1+1)+(x1/x2+1)
设X1,x2是方程2x²-8X+5=0的两个根,不解方程求出下列各式的值
(1)x1²x2+x1x2² (2)(x2/x1+1)(x1/x2+1)
(x2/x1+1)+(x1/x2+1)
设X1,x2是方程2x²-8X+5=0的两个根,不解方程求出下列各式的值(1)x1²x2+x1x2² (2)(x2/x1+1)(x1/x2+1)(x2/x1+1)+(x1/x2+1)
10 32/5
详解x1+x2=4 x1*x2=2.5
1,=(x1+x2)x1*x2=10
2.=(x1+x2)*(x1+x2)/(x1*x2)=32/5