解方程x²+(56/4-x)²=196x²+(56/4-x)²=196
问题描述:
解方程x²+(56/4-x)²=196
x²+(56/4-x)²=196
答
x²+(56/4-x)²=196
x^2+14^2-56x/2+x^2=196
2x^2-28x+196=196
2x^2-28x=0
x^2-14x=0
x(x-14)=0
x=0或14
答
x²+(56/4-x)²=196
x^2+14^2-56x/2-x^2=196
28x=0
x=0