1.已知a+b=-2,ab=-3,求代数式2(4a-3b-2ab)-3(2a-8/3b+ab)的值.2.请说明多项式3x^2-4x+6x^2+2-9x^2+4x-5的值与x的取值无关.3.写出-4x^2y的两个同类项,并计算这三个同类项的和.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/17 03:37:23
![1.已知a+b=-2,ab=-3,求代数式2(4a-3b-2ab)-3(2a-8/3b+ab)的值.2.请说明多项式3x^2-4x+6x^2+2-9x^2+4x-5的值与x的取值无关.3.写出-4x^2y的两个同类项,并计算这三个同类项的和.](/uploads/image/z/1549354-58-4.jpg?t=1.%E5%B7%B2%E7%9F%A5a%2Bb%3D-2%2Cab%3D-3%2C%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F2%284a-3b-2ab%EF%BC%89-3%EF%BC%882a-8%2F3b%2Bab%EF%BC%89%E7%9A%84%E5%80%BC.2.%E8%AF%B7%E8%AF%B4%E6%98%8E%E5%A4%9A%E9%A1%B9%E5%BC%8F3x%5E2-4x%2B6x%5E2%2B2-9x%5E2%2B4x-5%E7%9A%84%E5%80%BC%E4%B8%8Ex%E7%9A%84%E5%8F%96%E5%80%BC%E6%97%A0%E5%85%B3.3.%E5%86%99%E5%87%BA-4x%5E2y%E7%9A%84%E4%B8%A4%E4%B8%AA%E5%90%8C%E7%B1%BB%E9%A1%B9%2C%E5%B9%B6%E8%AE%A1%E7%AE%97%E8%BF%99%E4%B8%89%E4%B8%AA%E5%90%8C%E7%B1%BB%E9%A1%B9%E7%9A%84%E5%92%8C.)
xTn@~*UP^;8ϑ^"PB/DhAR$$@79Q]5!©?of2UE!:& ju6VmSLbU\8TMIh\Az7kUsk9)D
?^
CD7`c9@WM{NᮍX3Pd&R-_2wy{:1$be Lb >.DIDѕ1_ 1UJ8 FKq^Ɯ7H.kډan53 U|7{N2YՌ,FX6pĚa!MfdڈiZSOBdYφgS?g1gs^0F~.A
4̧L*NVI;3*[|pLތŒIZYxK)t VQ]v,q9eMM4)͟ KxB.Bm[a'b݆Xn4h\cE+ Psa;;k`OG