Question

Does anyone know what to numbers can be added together to make 15 but also multiply together to make 164? Can someone help me I have no clue

Answer 1

Hey i had to do something like this today for school use this calculator http://www.mathpapa.com/ Hope this help :)

Answer 2

Says there's no like terms

Answer 3

Well 10 + 5 = 15

15 * 164 = 2460 :)

Answer 4

@ScarlettFarra2000

Answer 5

What I'm trying to do is get
\[x^2+15x+164= (x+?)(x-?) \]
something like that but I don't know the numbers

Answer 6

Okay i think the answer is this x^2 + 15x + 164

Answer 7

@ScarlettFarra2000

Answer 8

Really?

Answer 9

Yeah i did it on a calculator and the answer was that

Answer 10

Could you please explain I've been working on this for three days

Answer 11

Okay i went to the mathpapa calculator right and i did this x^2 + 15x + 164 = and then the answer was x^2 + 15x + 164

Answer 12

See i got the same answer hold i'll screen shot the problem

Answer 13

There are no numbers that add to 15 and multiply to 164.

The biggest possible product would be 8*7 which only gives 56.

It doesn't factor.

Answer 14

Maybe I didn't do the problem right?

Answer 15

Area = length times width

Area of pool+path = (14+2x)(16+2x) = 440 (they told you that)

Answer 16

I still can't found out where I did this wrong

Answer 17

The answer is
X=6 or X=-36

According to the problem in the file above it is :
X^2+30x-216=0

Answer 18

Sorry this is the right answer :

(16+2x)*(14+2x)=440
224+32x+28x+4x^2=440
4x^2 + 60x - 216=0
X^2 + 15x - 54 =0
(X+18)(X-3)=0
X=-18 (not possible cause it's length or width)
Or
X=3

Answer 19

Thank you so much @hinamori you don't know how thankful I'm am

Answer 20

My pleasure, and glad I could help :)