Question

1. (2X+8) + (4X-5-5y) =

Answer 1

1. (2x + 8) + (4x - 5 - 5y)
=> 2x + 4x - 5y + 8 - 5
=> 6x - 5y + 3
2. (3p + q) + (-2p - 5q + 7)
=> 3p - 2p + q - 5q + 7
=> p - 4q + 7
3. (3x² + 2x - 1) + (x² - 5x + 6)
=> 3x² + x² + 2x - 5x - 1 + 6
=> 4x² - 3x + 5
4. 2(x + 2y - xy) + 5(2x - 3y + 5xy)
=> (2x + 4y - 2xy) + (10x - 15y + 25xy)
=> 2x + 10x + 4y - 15y - 2xy + 25xy
=> 12x - 11y + 23xy
5. (2x + 5) - (x - 3)
=> 2x - x + 5 + 3
=> x + 8
6. (x² + 4x - 1) - (2x² + 4x)
=> x² - 2x² + 4x - 4x - 1
=> -x² - 1
7. y² - 3 - (4y² + 5y + 6)
=> y² - 4y² - 5y - 3 - 6
=> -3y² - 5y - 9
8. (5a - 6 + ab - (a + 2ab - 1)
=> 5a - a + ab - 2ab - 6 + 1
=> 4a - ab - 5
9. a² + ab + 3b² - 7a² - 5ab
=> a² - 7a² + ab - 5ab + 3b²
=> -6a² - 4ab + 3b²
10. x² - x - 6 + 3x²- xy
=> x² + 3x² - x - xy - 6
=> 4x² - x - xy - 6