find the sum (adding polynomials) with solution.
1. (-6x - 3) + (3x - 9)
2. (3x² + 5x - 9) + (3x + 4)
3. (4x² + 3x + 6) + (6x² + 3x - 7)
4. (2ab² + 2a³b - 4ab) + (4a²b - 3ab - 2a²b)
5. (10a²b + 3ab - 6a²) + (-3ab² + 3a² - 5a²b)
6.(5x² + 10xy + 4y²) + (7x² + 8xy - 6y²)
1. (-6x - 3) + (3x - 9)
2. (3x² + 5x - 9) + (3x + 4)
3. (4x² + 3x + 6) + (6x² + 3x - 7)
4. (2ab² + 2a³b - 4ab) + (4a²b - 3ab - 2a²b)
5. (10a²b + 3ab - 6a²) + (-3ab² + 3a² - 5a²b)
6.(5x² + 10xy + 4y²) + (7x² + 8xy - 6y²)
Answers & Comments
Answer:
1.) -6x - 3 + 3x - 9
= (-6x + 3x) + (-3 - 9)
= -3x - 12
(-6x - 3) + (3x - 9) = -3x - 12.
2.) (3x² + 5x - 9) + (3x + 4)
= 3x² + (5x + 3x) - 9 + 4
= 3x² + 8x - 5
(3x² + 5x - 9) + (3x + 4) = 3x² + 8x - 5.
3.) (4x² + 3x + 6) + (6x² + 3x - 7)
= (4x² + 6x²) + (3x + 3x) + (6 - 7)
= 10x² + 6x - 1
the sum is 10x² + 6x - 1.