Thursday

July 24, 2014

July 24, 2014

Posted by **disha** on Saturday, August 17, 2013 at 6:02pm.

- algebra -
**Damon**, Saturday, August 17, 2013 at 6:56pm-B = -2a+b+c

B^2 = 4a^2-4ab-4ac+b^2+2bc+c^2

-4AC = -4a^2+4ab+4ac+8b^2-20bc+8c^2

so

B^2-4AC=9b^2-18bc+9c^2 = 9(b^2-2bc+c^2)

=9(b-c)^2 whew!

sqrt(B^2-4AC) = 3(b-c) = 3b - 3c

so

-B+/-sqrt(B^2-4AC) = -2a+b+c +/- (3b-3c)

= -2a+4b-2c or -2a-2b+4c

divide those by 2A

**Related Questions**

algebra II - I'm quite clueless as to how to solve this. I know the quadratic ...

algebra - Why are there two solutions in the quadratic equation and Why do you ...

algebra - 0. Tell your classmates about your pet to set up the scenario for ...

College Algebra - Solve the following equation in the complex number system x^4+...

Algebra - Solve the quadratic equation. 3x^2-15x+18=0 I know that the formula to...

Algebra - Explain how to solve a quadratic equation using the quadratic formula.

algebra - Solve this quadratic equation using the quadratic formula. x^2 + 8x - ...

algebra - which quadratic formula would be used to solve the following quadratic...

Algebra - how to solve this: what is the largest rectangular area that can be ...

8th Grade Algebra - You know how to solve quadratic equations using algebra, ...