SOLUTION: Please help me solve this equation: {{{ 2x^2 = 98 }}} Email: klunertl@gmail.com Thank You!

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Question 210204: Please help me solve this equation: +2x%5E2+=+98+
Email: klunertl@gmail.com
Thank You!
Found 3 solutions by Alan3354, stanbon, jim_thompson5910:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Please help me solve this equation:
2x^2 = 98
x^2 = 49
x = ±7

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
2x^2 = 98
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Divide both sides by 2 to get:
x^2 = 49
x^2-49 = 0
Factor:
(x-7)(x+7) = 0
x = 7 or x = -7
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Cheers,
Stan H.

Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!

2x%5E2=98 Start with the given equation.


x%5E2=%2898%29%2F%282%29 Divide both sides by 2.


x%5E2=49 Reduce.


x=%22%22%2B-sqrt%2849%29 Take the square root of both sides.


x=sqrt%2849%29 or x=-sqrt%2849%29 Break up the "plus/minus" to form two equations.


x=7 or x=-7 Take the square root of 49 to get 7.


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Answer:


So the solutions are x=7 or x=-7.