[RESOLVED] How to solve arithmetical problems?
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# Thread: [RESOLVED] How to solve arithmetical problems?

1. Junior Member
Join Date
Mar 2014
Posts
1

## [RESOLVED] How to solve arithmetical problems?

Here is the problem I need to solve:

Here is the code I created in order to solve it:

Code:
```double numx, numz, result;
numx = Convert.ToDouble(textBox1.Text);
numz = Convert.ToDouble(textBox2.Text);
result = Math.Pow(numx, 2) + Math.Pow(numz, 2) / 1 - Math.Pow(numx, 2) - Math.Pow(numz, 2) / 2;
label1.Text = result.ToString();```
But when solving the problem manually I get different answer, so what I'm doing wrong? A help would be appreciated and thanks for your time in advance.

Kind regards,

Ron

2. Member
Join Date
Jun 2011
Location
Buenos Aires, Argentina
Posts
130

## Re: How to solve arithmetical problems?

You are grouping wrong. Multiplication and division precede addition and substraction.
Code:
`result = (Math.Pow(numx, 2) + Math.Pow(numz, 2)) / (1 - (Math.Pow(numx, 2) - Math.Pow(numz, 2)) / 2);`
When having doubts with this sort of problems, reduce your expression to chunks of the ecuation.
Code:
```A = X^2 + Z^2
B = X^2 - Z^2
C = B / 2
D = 1 - C
E = A / D
result = E```
Hope it helps. Good luck!
Last edited by Nikel; March 28th, 2014 at 08:53 AM. Reason: Just formatting.

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