Question

Factor the expression:
x^2+9x+20=?

Answer 1

Find two numbers that multiply to 20, and add up to 9?

Answer 2

@agent0smith plese help me

Answer 3

with other problems like this do you work it the same way?

Answer 4

yes, unless the coefficient of x^2 is not 1

Answer 5

@emm2121 don't ask for help in someone else's question

Answer 6

sorry.... I'm just in dire need of help

Answer 7

one more question @agent0smith. how would the equation look after you factor in everything?

Answer 8

Try it and show me what you get...

Answer 9

(x+4)(x+5)?

Answer 10

@agent0smith

Answer 11

is this correct?

Answer 12

Foil it, to check if it's correct!

Answer 13

foil it?

Answer 14

Expand it. Multiply it out.

Answer 15

ok. what would i do with other numbers?

Answer 16

like n^2-19n+88?

Answer 17

Try it the same way as above. Find two numbers that multiply to the last and add up to the middle.

Answer 18

ok. so its two numbers that multiply with the end and add with the middle?

Answer 19

Multiply to equal the last, and add up to equal the middle.

Answer 20

oh. ok. thank you so much!

Answer 21

@agent0smith sorry one more question. would the second problem look like (n-10)(n-9)? or would it still be addition?

Answer 22

n^2-19n+88 ?
does it factor to...
(n-10)(n-9)

expand it and find out. Or just multiply -10 and -9 and see if you get 88.

Answer 23

so if the symbol in the problem change does the symbol change period?

Answer 24

n^2-19n+88
find two numbers that multiply to 88, and add up to -19

If you can't, list all the factors of 88 and see what will add to -19

Answer 25

oh. ok. thats all thank you!