(0.3-x)(500+0.05分之艾克斯x200)=180

来源:学生作业帮助网 编辑:作业帮 时间:2024/11/15 17:28:07
(0.3-x)(500+0.05分之艾克斯x200)=180
x)03֭050630}dg}O[M[_ad`ikha`TOb;r̎()?<@CAgk l `mC[sSl &mM, t ̀,cc[ sC u26Է%:F@.g_\g<!3k(

(0.3-x)(500+0.05分之艾克斯x200)=180
(0.3-x)(500+0.05分之艾克斯x200)=180

(0.3-x)(500+0.05分之艾克斯x200)=180
(0.3-X)(500+X/0.05×200)=180,
(0.3-X)(500+4000X)=180,
4000X^2-700X+30=0
400X^2-70X+1=0,
Δ=70^2-4×400=4900-1600=3300
X=(70±10√33)/800
X1=(7+√33)/80,X2=(7-√33)/80.