Judging from the math class. Because the parabola with an upward opening makes the solution set r, and the parabola has at most one intersection with the X axis, the discriminant is less than or equal to zero. Because the parabola with an upward opening makes the solution set r, and the parabola has at most one intersection with the X axis, the discriminant is less than or equal to zero. The range of values is r, which means that x 2-2mx+m+2 must have zero (if x 2-2mx+m+2 is always greater than 0, for example, Evergrande is a positive real number r, then the range of values of y must be y & gtlgr). Since there is a solution, the delta is naturally greater than or equal to 0.

Delta is a mathematical formula. Delta formula: △ = b 2-4ac. Delta is the pronunciation of the fourth Greek letter, capitalized as δ and lowercase as δ. In mathematics or physics, the capitalized δ is used to represent the incremental symbol. And lowercase δ is usually used to represent variables or symbols in higher mathematics.