Seeking 20 problems of integral simplification and evaluation in the first semester of junior high school!
2X - [6-2 (X-2)] where x = - 2
2. (5a + 2a2-3-4a3) - (- A + 3a3-a2), where a = - 2
3. (2m2n + 2mn2) - [2 (m2n-1) + 2mn2 + 2], where M = - 2, n = 2
4. (5a + 2a2-3-4a3) - (- A + 3a3-a2), where a = - 2
5. (2m2n + 2mn2) - [2 (m2n-1) + 2mn2 + 2], where M = - 2, n = 2
3 (AB + BC) - 3 (AB AC) - 4ac-3bc, where a = 2001 / 2002, B = 1 / 3, C = 1
7. (3xy + 10Y) + [5x - (2XY + 2y-3x)] where xy = 2, x + y = 3
8. Given a = - 2, B = - 1, C = 3, find the value of the algebraic formula 5abc-2a2b + [3ABC - (4ab2-a2b)]
2 (A2B + AB2) - [2ab2 - (1-a2b)] - 2, where a = - 2, B = 0.5
10. (- 3x2-4y) - (2x2-5y + 6) + (x2-5y-1) where x = - 3, y = - 1
10 is enough? I really don't have the strength to look for it~