## Haleyy_Bugg 2 years ago Factor completely: 10x^2 + 2x − 8 A) 2(5x − 1)(x + 4) B) 2(5x − 4)(x + 1) C) 2(5x + 2)(x − 2) D) 2(5x − 2)(x + 2)

1. Haleyy_Bugg

@Notamathgenius

2. JULIANCHICO

2(x+1)(5x-4)

3. goformit100

its easy, do you know the basics of quadratic Expression.

4. cwrw238

first divide by 2 = 2(5x^2 + x - 4)

5. Haleyy_Bugg

Then what?

6. goformit100

Dont just kee on giving answering directly

7. Haleyy_Bugg

@Nurali

8. cwrw238

then you need to factor the quadratic 5x^2 + x - 2 have you done these in class yet?

9. Haleyy_Bugg

no its a 5 question pretest. Im not allowed to look ahead and get the gist of anything until I do my pretest.

10. cwrw238

well you can try expanding each of the options util you get the original expression can you you work out (5x - 2)(x + 1) using the distributive law ?

11. Haleyy_Bugg

I dont know.

12. JULIANCHICO

13. cwrw238

well you multiply the second bracket by 5x then by - 2: = 5x(x + 1) - 2(x + 1) can you do that?

14. cwrw238

can you continue from there?

15. cwrw238

@julianchico - its best not to just give the answer - but to explain how to get the answer - otherwise there is little benefit to the questioner.