Question

can someone help me with 2y^2+9y+9

Answer 1

What do you want to do with 2y^2+9y+9 ? What are the instructions?

Answer 2

factor the trinomial

Answer 3

What are two integers that multiply to 18 and add to 9? We need those.

Answer 4

why would it be 18 just wondering

Answer 5

In the trinomial, ax^2 + bx + c, where a is not zero, to begin to factor by grouping, find two numbers that multiply to a and c such that those numbers also add to b. In your problem, a = 2 and c = 9. So, we look for two numbers that multiply to ac and add to b.

Answer 6

If you want to guess and hope to get the factors by trial and error, you might get lucky. I can't help with that.

Answer 7

Ok thank you well my homework will have to wait I will be on later

Answer 8

ok sorry about that im back so 18 and 9 is 6 and 3

Answer 9

2y² + 9y + 9 =

2y² + 3y + 6y + 9 =

y ( 2y + 3) + 3(2y + 3) =

[Note that there are common factors of (2y + 3)]

(2y + 3) (y + 3) @jen89

Answer 10

ok thank you

Answer 11

You're welcome.

Answer 12

can you help me with another one please

Answer 13

it is 4c^2-9c+5

Answer 14

What are two integers that multiply to 20 and also add to -9 ?

Answer 15

5 and -4

Answer 16

so do i just add those into the problem

Answer 17

5 and -4 = 1

Try again. The two numbers must add to -9

Answer 18

4 and 5

Answer 19

4 + 5 = 9.
The two numbers we want must add to -9.
You are close. Try again.

Answer 20

im stuck on this one i get -8 or -1 not -9

Answer 21

Let's try -4 and -5.

4c² - 9c + 5 =

4c² -5c - 4c + 5 =

c(4c - 5) - (4c - 5) =


c(4c - 5) - 1(4c - 5) =

(4c - 5) (c - 1)

Answer 22

ok i get it now