Saturday

August 23, 2014

August 23, 2014

Posted by **Emir** on Thursday, August 2, 2012 at 8:38am.

7x(squared)+4x-13=8

- Math -
**Steve**, Thursday, August 2, 2012 at 9:54am7x^2 + 4x - 13 = 8

multiply by 7 to get a perfect square on the 2nd-degree term:

49x^2 + 28x = 147

49x^2 + 28x + 4 = 147 + 4

(7x+2)^2 = 151

7x = -2 ± √151

x = (-2 ± √151)/7

**Related Questions**

Algebra - Completing the square method allows you to solve any quadratic ...

Algebra Quadratic Equations - I am trying to define the different appraoches to ...

Algebra Quadratic Equations - What are the pros and cons of completing the ...

Math - 5y(squared) + 4 = 14 solve quadratic equations by finding square roots

Algebra2 - Find the polynomials roots to each of the following problems: #1) x^2...

Math - Solve each of the following quadratic equations by completing the aquare...

Math - Hi everyone. Would someone be able to help me with this problems? I know ...

Algebra 2 - Completing the square method allows you to solve any quadratic ...

math - solve each of the following equations by completing the square and show ...

math - solve each of the following equations by completing the square and show ...