To start, I assume you meant that 'y' to be 'x': 



Multiply by 100:





Reduce (divide by 5):





Divide by 92:







Add  to both sides:









Take the square root of both sides, this introduces +/- on RHS:

 = +/-  

 =  -  +/-  



This evaluates to the solutions:

   x = 0.34425

   x = -1.10512







 

Answer by MathTherapy(10555)   (Show Source): You can put this solution on YOUR website!
 

Can someone help me solve this question by using completing the square method?



4.6y^2 + 3.5x - 1.75 = 0



I have tried everything but still cant solve it. thanks.

It's easier to work with integers than decimals. Therefore, let's convert all the decimal-coefficients by multiplying entire equation by 20.





 ------- Dividing entire equation by 92 in order to get a leading coefficient of + 1

 

 ------- Adding  to get the constant on the right-side

 ------- Taking  the value of "b," squaring it, and then adding the result to both sides





 ------- Taking square root of both sides





 

Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
 That's not a question, it's an equation.

Equations are solved, questions are answered.

==================

You obviously didn't "try everything." 

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