SOLUTION: Hi, I'm not sure how to complete the square for the problem 9y^2=6y+7. Thank you so much!

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Question 1089911: Hi, I'm not sure how to complete the square for the problem 9y^2=6y+7. Thank you so much!
Found 3 solutions by josgarithmetic, ikleyn, MathTherapy:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!
Adjust into this form: .

Completing the Square to Solve Quadratic Equation

Meaning of Completing The Square
Answer by ikleyn(52802)   (Show Source): You can put this solution on YOUR website!
.
9y^2 = 6y + 7  ====> 

9y^2 - 6y = 7  ====>

9y^2 - 2*3y + 1 = 7 + 1

(3y - 1)^2 = 8  ====>

3y - 1 = +/- 

3y = 1 +- 


y = .

Solved.


To see more examples/samples of solved problems of this type, look into the lesson
    - HOW TO solve quadratic equation by completing the square - Learning by examples
in this site.

Also, you have this free of charge online textbook in ALGEBRA-I in this site
    - ALGEBRA-I - YOUR ONLINE TEXTBOOK.

The referred lesson is the part of this textbook under the topic "Quadratic equations".


Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Hi, I'm not sure how to complete the square for the problem 9y^2=6y+7. Thank you so much!


You need to SUBTRACT 6y from each side to get:

This is your starting point. Let no-one who seems to know NOTHING about math, or who continues to WRITE GARBAGE in response to people's math questions, tell you otherwise.

This NUT is ridiculous. 

He's telling you to take the constant, move it to the left, and then he's going to tell you after to move it back to the right. What a character!! 

BE FOREWARNED!!! 

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