x(x-2)-3x²=0 解方程
问题描述:
x(x-2)-3x²=0 解方程
答
x(x-2) - 3x² = 0
x² - 2x - 3x² = 0
2x² + 2x = 0
x² + x = 0
x(x + 1) = 0
x1 = 0
x2 = - 1