Algebra
posted by Jamie .
How do I solve a quadratic equation x^2  x = 30 by completing the square
I don't understandcould someone just explain the steps to solving this

Algebra 
Anna
I found this example on purplemath
You coul use this and apply knowledge.
This is the original equation. x2 + 6x – 7 = 0
Move the loose number over to the other side. x2 + 6x = 7
Take half of the xterm (that is, divide it by two) (and don't forget the sign!), and square it. Add this square to both sides of the equation.
Convert the lefthand side to squared form. Simplify the righthand side. (x + 3)2 = 16
Squareroot both sides. Remember to do "±" on the righthand side. x + 3 = ± 4
Solve for "x =". Remember that the "±" gives you two solutions. Simplify as necessary. x = – 3 ± 4
= – 3 – 4, –3 + 4
= –7, +1 
Algebra 
jamie
Thank you

Algebra 
Anna
you're welcome!
Respond to this Question
Similar Questions

math,help,algebra I
I need help can someone help me get unstuck and let me know if i am correct.thank you. solve by completing the square. 4x^2+2x3=0 this is what i am doing: i used the quadratic equation. so where i am is in this step: x = (2 (+) … 
Algebra 2
Completing the square method allows you to solve any quadratic equation. For each of the following determine what number completes the square. I cannot find my notes on completing the square, can someone please help with these two … 
Algebra Quadratic Equations
I am trying to define the different appraoches to solving quadratic equations. My book says using quadratic formula, completing the sqaure and factoring. I thought completing the square would be by facotring? 
Math
Hi everyone. Would someone be able to help me with this problems? 
algebra
Solve the following equation: k2 + 4k = 0 By factoring and By using the quadratic formula Can someone please help me to understand how to this problem...I do not understand the steps to get the correct answer. Thanks!!! 
Algebra
I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain … 
Algebra
I was given this answers to a problems I solved but I do not understand what she means hope you can help. Before attempting to solve this quadratic equation, determine how many solutions there will be for this quadratic equation. Explain … 
algebra
Solve the quadratic equation by completing the square. 3x^2+9x=1 Not sure how to do these, if someone could expplain. 
Algebra
Which of the following statements is true? 
Geometry
Solve each equation below by completing the square: 1) x^2 + 6x = 16 My steps: x^2 + 6x  16 = 0 (x  2 )(x + 8) x = 2, 8 I set it to zero and factored it out. But my teacher said not do it that way and do it by dividing by 2 but …