(3×19-2)2÷(3×194)-2=______

(3×19-2)2÷(3×194)-2=______.
2025-05-13 22:31:25
推荐回答(1个)
回答1:

原式=(9×rr-4)÷(

r
9
×rr-8)=8r×rr4=8.r×rr5
故答案为:8.r×rr5