2×(6/2+c)=1/1+c+15/3+c,求非零常数c值?
问题描述:
2×(6/2+c)=1/1+c+15/3+c,求非零常数c值?
答
C=-0.5
12/(2+c)={(3+c)+15(1+c)}/(1+c)(3+c)
12/(2+c)=(18+16c)/(3+4c+c^2)
36+48c+12c^2=36+50c+16c^2
2c+4c^2=0
c+2c^2=0
c(1+2c)=0
c=-0.5