(32-x)÷2 ×x=120
问题描述:
(32-x)÷2 ×x=120
帮解下
答
(-x^2)/2+16x=120 同时乘以-2得x^2-32x+240=0 即(x-10)*(x-12)=0 所以x1=10 x2=12
(32-x)÷2 ×x=120
帮解下
(-x^2)/2+16x=120 同时乘以-2得x^2-32x+240=0 即(x-10)*(x-12)=0 所以x1=10 x2=12