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2. (2x2y - 5xy + 3y2) - (7xy - 6y2 + 5xzy)
3. (9x3-6x3 + 7x2) - (783- 6x5 + 2x2)
4. Subtract4x3-5x-8from6x2-3x+8
5. (1.5y3 + 4.8y2 + 12) - (ys - 1.7y2 + 2y)
pls answer I need the answer now​