Question

Jabarkanlah
1. (x + 2) (x + 6)
2. (x + 5) (x + 8)
3. (x - 4) (x - 5)
4. (2x + 3) (2x + 4)
5. (3x - 5) (2x + 9)
6. (r + 2) (r² + 2r + 1)
7. (3y - 2z) (6y² - 4yz + 4z²)
8. (y² - 5) (2y² + 3yz - 2z²)

Answer 1

1. x² + 6x + 2x + 12
= x² + 8x + 12
2. x² + 8x + 5x + 40
= x² + 13x + 40
3. x² -5x -4x + 20
= x² -9x + 20
4. 4x² + 8x + 6x + 12
= 4x² + 14x + 12
5. 6x² + 27x - 10x - 45
= 6x² + 17x - 45
6. r³ + 2r² + r + 2r² + 4r + 2
= r³ + 4r² + 5r + 2
7. 18y³ - 12y²z + 12yz² - 12y²z + 8yz² - 8z³
= 18y³ - 24y²z + 20yz² - 8z³
8.

Answer 2

1) x² + 6x + 2x + 12 = x² + 8x + 12
2) x² + 8x + 5x + 40 = x² + 13x + 40
3) x² -5x -4x + 20 = x² -9x + 20
4) 4x² + 8x + 6x + 12 = 4x² + 14x + 12
5) 6x² + 27x - 10x - 45 = 6x² + 17x - 45
6) r³ + 2r² + r + 2r² + 4r + 2 = r³ + 4r² + 5r + 2
7) 18y³ - 12y²z + 12yz² - 12y²z + 8yz² - 8z³ = 18y³ - 24y²z + 20yz² - 8z³
8) 2y^4 + 3y²z - 2y²z² - 10y² - 15yz + 10z²