计算:69*69/68*68*70*70(-2)计算:69*69/(68*68*70*70)-2

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/30 22:58:16
计算:69*69/68*68*70*70(-2)计算:69*69/(68*68*70*70)-2
xPMK@+$i+_ z,'QADAѣ_Ӭ/tلœ07ͼy(ul3FRl*~6˙'o5Pqr49 *sAdr(I1IFp̲AhZVRE[17wp@X-^xYjAP DREa=˪yIqdRL`LX6DTy7i{z/v]S@CI~0

计算:69*69/68*68*70*70(-2)计算:69*69/(68*68*70*70)-2
计算:69*69/68*68*70*70(-2)
计算:69*69/(68*68*70*70)-2

计算:69*69/68*68*70*70(-2)计算:69*69/(68*68*70*70)-2
=4761/22657600-2
=-45310439/22657600

x-3y>=x+3y
-3y>=3y
-6y>=0
-y>=0
所以-1/20y>=0
两边减去1/5y
-1/4y>=-1/5y
-1/5y__<=__-1/4y
x²-2xi+x+3m-i=0
(x²+x+3m)-(1+2x)i=0
有实数根则x是实数
所以x²+x+3m=0
1+2x=0
x=-1/2
m=(-x²-x)/3=1/12