1 / 5

Taking a Square Root to Solve an Equation

Taking a Square Root to Solve an Equation. Taking a Square Root to Solve an Equation. In order to solve for x , you have to UNDO the squared first (i.e. square root). Solve:. What are the number(s) whose square is 9?. The square of 3 AND -3 is 9.

ataret
Download Presentation

Taking a Square Root to Solve an Equation

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Taking a Square Root to Solve an Equation

  2. Taking a Square Root to Solve an Equation In order to solve for x, you have to UNDO the squared first (i.e. square root) Solve: What are the number(s) whose square is 9? The square of 3 AND -3 is 9 Find the x that makes x-7 equal POSITIVE 3 Find the x that makes x-7 equal NEGATIVE 3 NOTE: In general, this method only works when there is ONE variable in the equation.

  3. Taking a Square Root to Solve an Equation In order to solve for x, you have to UNDO the squared first (i.e. square root) Solve: What are the number(s) whose square is 12? Do not forget the square of a positive and negative number is positive Simplify any square roots Find the x that makes x-3 equal a NEGATIVE Find the x that makes x-3 equal a POSITIVE EXACT answers Is also an acceptable EXACT answer Are acceptable APPROXIMATE answers

  4. Taking a Square Root to Solve an Equation In order to solve for x, you have to UNDO the squared first (i.e. square root) Solve: What are the number(s) whose square is -11? NOT POSSIBLE The square of a number can not be negative. This equation has NO SOLUTIONS.

  5. Taking a Square Root to Solve an Equation In order to solve for x, you have to UNDO the squared first (i.e. square root) Solve: What are the number(s) whose square is 0? The square of 0 AND -0 is 0 Since +0 and -0 are the same number. There is only ONE Answer.

More Related