Friday

January 30, 2015

January 30, 2015

Posted by **Lisa** on Friday, December 28, 2012 at 1:56am.

Solve and verify the following equation:

13x2 + 35x + 21 = –12x2 – 25x – 15

- math -
**drwls**, Friday, December 28, 2012 at 2:41am4a^2 + 25 = –20a

4a^2 + 20a + 25 = 0

(2a +5)^2 = 0

a = -5/2

13x^2 + 35x + 21 = –12x^2 – 25x – 15

25x^2 + 60x +36 = 0

(5a +6)^2 = 0

a = -6/5

You do the verifying.

**Answer this Question**

**Related Questions**

Algebra - Rewrite the middle term as the sum of two terms and then factor ...

Math - Use factoring to solve the quadratic equation. 5x2 - 25x + 30 = 0

ap algebra - Please help me with this problem. I dont know what to do. Use the ...

math - Solve this equation. Verify your solution using a graphing utility. log_1...

Math - Solve each higher degree equation by factoring. The answers are suppose ...

Pre-Calculus/Trigonometry - Solve the following system of equations ...

Pre-Calculus/Trigonometry - Solve the following system of equations ...

math - Do 3x^2-7x+2=0 verify that the sum of the solution is -b/a and verify ...

math - Solve this equation. Verify your solution using a graphing utility. log_a...

math - Jenny wanted to solve the quadratic equation x2 - 11x +18 = 0 by ...