Question

Solve the proportion x/x+1=4/x+4 . What is the value(s) of x

Answer 1

First you cross multiply.

\( \color{Black}{\Rightarrow x(x + 4) = 4(x + 1) }\)

Answer 2

why x^2 +1=0 ?

i think x^2 -4=0

Answer 3

so than x^2 =4
x_1,2=+/- 2

Answer 4

the choices were
x=-2
x=4
x=-2 and x=2
x=-1 and -4

Answer 5

Solve using the product rule

Answer 6

\( \color{Black}{\Rightarrow x^2 - 4 = 0 }\)

\( \color{Black}{\Rightarrow (x + 2)(x - 2) = 0 }\)

Answer 7

lol I was wrong twice ;)

Answer 8

on the right part not is 4x+1

Answer 9

Yeah I got that wrong but deleted it

Answer 10

so than x_1,2=+/- 2

Answer 11

\( \color{Black}{\Rightarrow x + 2 = 0 }\)

\( \color{Black}{\Rightarrow x = -2 }\)

OR

\( \color{Black}{\Rightarrow x - 2 = 0 }\)
\( \color{Black}{\Rightarrow x = 2 }\)

Answer 12

ok thks

Answer 13

yw

good luck

bye