Qph123456 @ 2023-07-19 10:38:48
2−1.5(x−3)(x−3)到底是什么意思
by Yukinoshita_Yukino @ 2023-07-19 10:44:11
初一数学多项式部分
by ajxz_ @ 2023-07-19 10:52:22
@Yukinoshita_Yukino 说得对
by ajxz_ @ 2023-07-19 10:53:17
@Qph123456 按照我的想法和楼上一样，应该是初一的知识
by dienter @ 2023-07-19 11:09:25
@Qph123456
2-1.5(x-3)^2\ =2-1.5(x^2-6x+9)\ =2-1.5x^2+9x-13.5\ =9x-1.5x^2-11.5