Find the sum.
1.(4x^2 + 3x + 6) + (6x^2 + 3x - 7)
2.(2ab^2 + 2a^3b - 4ab) + (4a^2b - 3ab - 2a^2b)
3.(10a^2b + 3ab - 6a^2) + (-3ab^2 + 3a^2 - 5a^2b)
4.(5x^2 + 10xy + 4y^2) + (7x^2 + 8xy - 6y^2)
1.(4x^2 + 3x + 6) + (6x^2 + 3x - 7)
2.(2ab^2 + 2a^3b - 4ab) + (4a^2b - 3ab - 2a^2b)
3.(10a^2b + 3ab - 6a^2) + (-3ab^2 + 3a^2 - 5a^2b)
4.(5x^2 + 10xy + 4y^2) + (7x^2 + 8xy - 6y^2)
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Answer:
1) 10x² + 6x − 1
2) 2a³b + 2a²b + 2ab² − 7ab
3) 5a²b − 3ab² − 3a² + 3ab
4) 12x² + 18xy − 2y²