Math, asked by rehan45628, 10 months ago

3x-2/x = 5 then 3x+2/x = ?

Answers

Answered by Vatsala007
3

Answer:

7.

Step-by-step explanation:

3x-2/x=5

=>  (3x^2 -2)/x=5

=>  3x^2 -2 =5x

=>  3x^2 - 5x - 2=0

Solve quadratic equation, (more efficient using formula)

x comes as 2

substitute the value of x in the asked equation

3x2 +2/2

=6+1

=7(ans)


rehan45628: without quadratic equation can you solve this
Vatsala007: let me see.....
Vatsala007: no, i cant because the question seems to be of quadratic equation.
Vatsala007: why, is the explanation not appropriate
rehan45628: ok no problem i found the trick
rehan45628: by your method
rehan45628: thanks
Vatsala007: you're welcome :)
rehan45628: yAha
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