Question 1036502
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I need help with this: 2x^2+5=77 Thanks
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<pre>
1.  {{{2x^2+5}}} = {{{77}}}  --->  (distract 5 from both sides)  --->

2.  {{{2x^2}}} = {{{72}}}.    --->  (divide both sides by 5)  --->

3.  {{{x^2}}} = {{{36}}}.      --->  (take the square root from both sides)  --->

4.  x = +/-6.

<U>Answer</U>.  x = 6  and/or  x = -6.
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