利用因式分解计算2.5×19.7+32.4×2.5-2.5×32.1
来源:学生作业学帮网 编辑:学帮网 时间:2024/06/16 21:10:06
利用因式分解计算2.5×19.7+32.4×2.5-2.5×32.1
2.5×19.7+32.4×2.5-2.5×32.1
=2.5×(19.7+32.4-32.1)
=2.5×20
=50
=1+1!!!!!!!!!!
解2.5×19.7+32.4×2.5-2.5×32.1
=2.5×(19.7+32.4-32.1)
=2.5×(52.1-32.1)
=2.5×20
=50
yhtjmgkujhghuhgbfnfutdgjj???????????????