Sunday

December 21, 2014

December 21, 2014

Posted by **kristina** on Tuesday, December 4, 2012 at 3:41pm.

3+ the square root of (2x+2)=x

- advanced math -
**Steve**, Tuesday, December 4, 2012 at 3:46pm3+√(2x+2) = x

√(2x+2) = x-3

2x+2 = (x-3)^2

2x+2 = x^2-6x+9

x^2-8x+7 = 0

(x-1)(x-7) = 0

x = 1 or 7

check for extraneous roots:

3+√(2+2) = 3+2 = 5 nope

3+√16 = 3+4 = 7 ok

so, x=7 is the only solution

x=1 is the solution using the -√

3-√4 = 1

**Answer this Question**

**Related Questions**

Math - I am given 4 choices for the problem the square root of 8x -2 = the ...

Math PLEASE HELP ASAP - -PLEASE INCLUDE SOLUTIONS AND EXPLAIN HOW YOU DID IT ...

advanced math - find the real solutions. 2+the square of (9x-8)=x

algebra - 1.)correct 2.)wrong---> the first term is wrong 4(3a^2)^2 = 36a^4 3...

Advanced Algebra - Can you please explain to me how I can solve these problems...

algebra - Find the real solutions 8x^2 + y^2 = 25 8X^2 - y^2 = 39 Is this no ...

Math Help!!! - 1. Which of these numbers can be classified as both real and ...

Math - i^6 = (i^2)^3 = (-1)^3 = -1 The square, not the square root of -1 is 1...

MATH I NEED HELP PLEASE - 1. Which of the following conclusions is true about ...

Math - 1. Rosa, Roberto, Andrea, and Inno find an estimate for square root 10. ...