Question

Faktorisasikan !!!
1. 2x² + 7x + 15 = ...
2. 2x² + 8x = ...
3. x² + 5x + 6 = ...
4. x² - 81 = ...
5. x² + 13x + 30 = ...
6. x² + 13x + 30 =...

Answer 1

1. Soal tidak valid !

2. 2x² + 8x 
= 2x(x + 4)

3. x² + 5x + 6
= (x+3)(x+2)

4. x² - 81
= (x+9)(x-9)

5. x² + 13x + 30
= (x+10)(x+3)
 
6. x² + 13x + 30
= (x+10)(x+3)