Wednesday
July 30, 2014

Homework Help: algebra

Posted by carla on Saturday, July 14, 2007 at 6:53am.

I worked the problem out, but could you check my work over and see if it's correct? I used the quadratic formula.

2x^2+10x+11
a=2 b=10 c=11

x=-10(plus or minus) sqrt 10^2-4(2)(11)
over 2(2)

-10(plus or minus) sqrt 100 - 8(11)
over 4

-10(plus or minus) sqrt 100-88
over 4

-10(plus or minus) sqrt 12
over 4
FINAL ANSWER:
-10(plus or minus) 2 sqrt 3
over 4

can this be simplified any more? or is the final answer even correct? pls help!!


Divide the 2a out, so

x= -2.5 +- .5* sqrt3

I'm a little confused. could you show me where exactly I went wrong? thanks! :)

When you used the formula
x = [-b +/- sqrt (b^2-4ac)]/2a, you forgot to divided by 2a, which is 4.

Answer this Question

First Name:
School Subject:
Answer:

Related Questions

Pre-algebra - Solve. 29x 2(9x 0.455) = 10x + 0.525 Give us you thinking on ...
math - I am working on quadratic equations and I have worked a problem down to 3...
Algebra - I was given this answers to a problems I solved but I do not ...
Algebra - I was given this answers to a problems I solved but I do not ...
i need help..algebra/math - solve by using the quadratic formula: x2 plus x ...
Algebra - Solve x^2-10x+22=0 by using the quadratic formula. After I substituted...
Algebra - Solve the equation using the Quadratic Formula 5xsquared+13x-6=0 i ...
Math(Please check my work.) - (2x-3)(x^2+5x-3)=2x+10x^2-15x+9 *Is this correct...
precal - when i do the quadratic equation i get -17 plus or minus the square ...
Algebra - Quadratic Formula Using +/- for plus or minus Using \/ radical sign...

Search
Members