15x^2-36x+20=0 0.5
1个回答
取y=15x^2-36x+20
将x=0.6,0.7,0.8,0.9分别代入y得
y=3.8, 2.15, 0.8, -0.25
因为0.8>0,-0.25
相关问题
(x-20)*(0.2-0.15)=0.5x+5
X:3/5=5/6:2 1.3/3.9=20/x 2/3:5/6=X:0.5 X/0.15=0.4/0.03 x:24/
20.5x0,04+0.36简单方式计算
x2-15x+36=0,X等于多少
解方程:x^2-2x-15+[36/(x^2-2x)]=0
14x+6(11-x)=54 5x+8(15-x)=90 4x-2(10-x)=14 6x-3(15-x)=36 0.5
解方程(1)[2x−1/2−x+2=5x+23−x+36](2)[0.4x+0.9/0.5−0.03+0.02x0.03
解方程(1)[2x−1/2−x+2=5x+23−x+36](2)[0.4x+0.9/0.5−0.03+0.02x0.03
x-(0.5x+20)=(0.5x+20)乘0.5+1
求详细的解法6X²+X-15=0 X²-9X-36=0