Question

Solve the following proportion:

(Problem in comments...)

Answer 1

\[\frac{ x+1 }{ 7 } = \frac{ 8 }{ x }\]

Answer 2

First remember this :
cross multiplying always gives u an EQUATION.

Answer 3

An equation will have left side, and a right side.

Answer 4

The answer is x=-8 & x=7?

Answer 5

x^2+x=56
U get a quadratic equation

Answer 6

Correct !

Answer 7

Thank you!

Answer 8

(x+0.5)^2=56 U can solve by completing the square

Answer 9

np :)

Answer 10

That seem sooo much more difficult lol @UDIT123

Answer 11

How did u get it otherwise??????????????????????????/

Answer 12

lol thats how u did also it rightt ?

Answer 13

Oh, you have factored it, nice :)

Answer 14

yes u will get a quadratic equation anyhow u do it

Answer 15

yup

Answer 16

How did cookibibabi do it then??

Answer 17

must have factored it instead of completing the square

Answer 18

like she/he was doing in her/his earlier problems :)

Answer 19

did u solve that cokkibaiba

Answer 20

lol I'm a girl & yea, nobody got time for squares lol

Answer 21

That is simplest method BY THE WAY

Answer 22

thats cleaver, girly ;)

Answer 23

lol My way is waaaay easier & less confusing & with less squares lol

Answer 24

order of preference :
1) factoring/special trinomials
2) completing the square/quadratic formula

Answer 25

this is how I did it...

Answer 26

yes i try factoring first too lol

Answer 27

x^2+x-56=0
x^2+8x-7x-56=0
x(x-8)+7(x-8)=0
(x+7)(x-8)=0
x=-7 or 8

Answer 28

generally we factor this in one step :

x^2+x-56=0

(x+8)(x-7) = 0

Answer 29

\[\frac{ x+1 }{ 7 } = \frac{ 8 }{ x }\]
\[\frac{ x(x+1) }{ 8(7) }\]
\[x^2+x-56=0\]
(x+8)(x-7)=0
x=-8, x=7

Answer 30

splitting x terms is not needed here cuz the leading coefficient is 1 @UDIT123

ofc it helps in seeing how it is getting factored out though.. .

Answer 31

she used theorem on equal ratios

Answer 32

hmm-

Answer 33

That's how my professor taught us lol