SOLUTION: Solve y to the second power equals twenty-five , where y is a real number. Simplify your answer as much as possible. If there is more than one solution, separate them with comm

Question 1208686: Solve y to the second power equals twenty-five , where y is a real number.
Simplify your answer as much as possible.
If there is more than one solution, separate them with commas.
If there is no solution, click on "No solution".
Found 2 solutions by ikleyn, math_tutor2020:
Answer by ikleyn(52786) (Show Source): You can put this solution on YOUR website!
.

They want you solve = 25. Take square root of both sides y = +/- = +/- 5. The original equation has two roots. One root is y= 5. Another root is y= -5. CHECK. = 25. ! correct ! = 25. ! correct ! ANSWER. The original equation has two solutions: y = 5 and y = -5.

Solved.

Answer by math_tutor2020(3817) (Show Source): You can put this solution on YOUR website!

The tutor ikleyn has a great answer. Here's another approach

Difference of squares factoring rule a^2-b^2 = (a-b)(a+b)

or If A*B = 0 then either A = 0 or B = 0

or

To check each answer, plug them into the original equation one at a time.
Make sure the negative is being squared as well.
If y = -5 then and NOT

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