❤️Math Follow Me and Practice everyday 💯
🤔️跟我一起做💯
🌹Topic today：Quadratic Functions and Parabolas二次函数和抛物线
🔑Key words
▶️vertex顶点，the lowest point最低点，the highest point最高点
▶️minimum value最小值，maximum value最大值
▶️completing the square配成完全平方，coefficient系数
▶️quadratic formula二次方程解的公式，solution解
▶️difference差，product乘积
