ACTM.093 Adding and Subtracting Polynomials
0%
Skill Level🔴 Hard
00:00
Progress to Next Level25% to Medium
EasyMediumHardMastery100%

Simplify: (8m2 + mn - 9n2 - 11m - 11n) - (2mn - 2n2 + 9) + (9n2 + 12m - 7n)