Question

For the trinomial, determine the signs that will appear in the binomial factors.

A. both +
B. both -
c. one +, one -

Answer 1

The trinomial is missing

Answer 2

x^2+740x+9810

Answer 3

would the answer not be a?

Answer 4

Do you know the quadratic formula?

Answer 5

no

Answer 6

The quadratic formula is

\[\Large x=\frac{-b \pm \sqrt{b^2-4ac}}{2a}\]

Answer 7

Use this formula to solve

x^2+740x+9810 = 0

for x

Answer 8

Once you get the solutions, you can use them to factor x^2+740x+9810

Answer 9

ok so what do i plug in for b ?

Answer 10

im kinda lost still

Answer 11

a = 1,
b = 740,
c = 9810

Answer 12

\[\Large x = \frac{-b\pm\sqrt{b^2-4ac}}{2a}\]


\[\Large x = \frac{-(740)\pm\sqrt{(740)^2-4(1)(9810)}}{2(1)}\]

Answer 13

and the plus or minus sign what does that mean?

Answer 14

Example:

10 plus/minus 5

is the same as

10+5 or 10-5

Answer 15

im lost sorry

Answer 16

i hate problems like these, and i don't have my caculator wwith me

Answer 17

you can use google as a calculator

Answer 18

or you can use wolfram alpha

Answer 19

or you can use graphcalc

http://www.graphcalc.com/

Answer 20

There are a ton of online calculators or calculators you can download

Answer 21

i believe it's going to be both +

Answer 22

hmm are you sure that its x^2+740x+9810

that can't be factored

Answer 23

yep

Answer 24

that's the problem

Answer 25

well the solutions are -370+sqrt(127090), -370-sqrt(127090)

this means that it cannot be factored over the rationals

Answer 26

so therefore it has to be both +'s?

Answer 27

I'm not exactly sure what this problem wants then

Answer 28

it just says determine the signss that will appear in the binomial factors

Answer 29

i know

Answer 30

so what would ur guess be?

Answer 31

but it doesn't factor, unless they mean it factors to

( x+370-sqrt(127090) )( x+370+sqrt(127090) )

Answer 32

but most books won't consider that factoring

Answer 33

right so if it was u and the problem what would be ur guess as to what the signs would be

Answer 34

hmm probably + and -, but that's just a wild guess

Answer 35

it was both +'s that's what i thought 2

Answer 36

im going to put another one up

Answer 37

hmm then idk what they were after