①-2a²(二分之一ab+b²)-5a(a²b-ab²)③3x(x²-2x-1)-2x²(x-2)
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 06:50:46
![①-2a²(二分之一ab+b²)-5a(a²b-ab²)③3x(x²-2x-1)-2x²(x-2)](/uploads/image/z/2506614-6-4.jpg?t=%E2%91%A0-2a%26%23178%3B%28%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80ab%2Bb%26%23178%3B%29-5a%28a%26%23178%3Bb-ab%26%23178%3B%29%E2%91%A23x%28x%26%23178%3B-2x-1%29-2x%26%23178%3B%EF%BC%88x-2%EF%BC%89)
xPMJ@> ):Q+4Q3YjBKkE*HF0iigΪW${Ap{cm9>(|5O
①-2a²(二分之一ab+b²)-5a(a²b-ab²)③3x(x²-2x-1)-2x²(x-2)
①-2a²(二分之一ab+b²)-5a(a²b-ab²)
③3x(x²-2x-1)-2x²(x-2)
①-2a²(二分之一ab+b²)-5a(a²b-ab²)③3x(x²-2x-1)-2x²(x-2)
原式=-ab-2a^2b^2-5a^3b-5a^2b^2=-5a^3b-7a^2b^2-ab
③=3x^3-6x^2-3x-2x^3+4x=x^3-6x^2+x
很高兴为您解答,【学习宝典】团队为您答题.
请点击下面的【选为满意回答】按钮,