SOLUTION: Find the solution sets.
4x^2 - 25 = 0
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Question 89199: Find the solution sets.
4x^2 - 25 = 0
Found 2 solutions by Nate, praseenakos@yahoo.com:
Answer by Nate(3500) (Show Source): You can put this solution on YOUR website!
4x^2 - 25 = 0
4x^2 = 25
x^2 = 25/4
x = +- 5/2
x = 2.5 and -2.5
Answer by praseenakos@yahoo.com(507) (Show Source): You can put this solution on YOUR website!
Question
Find the solution sets.
4x^2 - 25 = 0
Answer.
This can be written as .....
, which is of the form,
We know that can be written as,
= (a + b) ( a - b)
Similarly
==> (2x + 5)( 2x - 5 ) = 0
==> either (2x + 5) = 0 or ( 2x - 5 ) = 0
==> 2x + 5 = 0
Subtract 5 from both sides.....
==> 2x - 5 - 5 = 0 - 5
==> 2x = -5
Divide both sides by 2
==>
==>
Now suppose 2x-5 = 0
Add 5 on both sides....
2x - 5 + 5 = 0 + 5
==> 2x = 5
Divide both sides by 2
==>
==>
So the solution set is = { 2.5, -2.5 }
Hope you found the explanation useful.
Regards.
Praseena
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