30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/02 04:07:20
![30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式](/uploads/image/z/1108662-6-2.jpg?t=30%2B%28-x%29%26%23178%3B%2B6x%28x%2B2%29%3E-x%282x%2B3%29%2B%28-3x%29%26%23178%3B+%E8%A7%A3%E4%B8%8D%E7%AD%89%E5%BC%8F)
30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式
30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式
30+(-x)²+6x(x+2)>-x(2x+3)+(-3x)² 解不等式
30+x²+6x²+12x>-2x²-3x+9x²
30+7x²+12x>7x²-3x
15x>-30
x>-2
30+x²+6x²+12x>-2x²-3x+9x²
15x>-30
x>-2