## jvg1231 2 years ago factor 3a^2+10a+8

1. Kagome_gurl8
2. Cassandr4

3. jvg1231

your right.. my stupid math quiz online repeated the question, its just i cant go back and check my last question

4. jvg1231

thank you

5. Cassandr4

From @mathstuden55 's most excellent response: Write two sets of parentheses. First factor 3a^2: (3a )(a ) because (3a)(a) = 3a^2 Now you need two numbers that multiply to 8: 1 and 8 or 2 and 4 Now you have 4 possibilities as to how to place the 1 and 8 or the 2 and 4 (3a + 1)(a + 8) or (3a + 8)(a + 1) or (3a + 2)(a + 4) or (3a + 4)(a + 2) The way you know the right one is to do foil to these 4 choices and see which one gives you the original middle term, 10a. In reality, all you need to do is the OI part of foil becasue that's where the middle term , 10a, comes from.

6. precal

use slide and divide

7. precal

|dw:1354670770290:dw|slide 3 by multiplying it to 8

8. precal

|dw:1354670812324:dw|divide 3 back in

9. precal

|dw:1354670834353:dw|

10. jvg1231

thank you!