How to solve this equations

[branko917]

Have some trouble with this two equations:

1.



2.



i need solution for x in detailed step by step solving.

Thanks in advance.

 

[Otis]

i need solution for x in detailed step by step solving.

Hi Branko. We like to help students complete their own work, at this forum. (Please see the Read Before Posting announcement, if you haven't already.)

The first one is a quadratic equation. If we square everything and combine like-terms on one side, we get the form

ax^2 + bx + c = 0

If you need help getting that form, let us know.

Next, we can solve for x using the Quadratic Formula:

\(\displaystyle x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a}\)

If you'd like more help, please show us your beginning work.

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Here are some steps, to start solving the second equation:

Add 981 to each side

Divide each side by 3000

Square each side

Multiply each side by (0.25 + x^2)

Please try those steps, and post what you get. We can go from there.

(Next time, please start new threads for new exercises. Thanks.)

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