SOLUTION: I am having trouble solving this equation by either using the quadratic formula, by factoring or by completing the square..
3x^2=15x+10
i have come up with the answer of x=15+-
Algebra.Com
Question 602255: I am having trouble solving this equation by either using the quadratic formula, by factoring or by completing the square..
3x^2=15x+10
i have come up with the answer of x=15+- square root of 105/6 is this correct?
email is stonewoodfarms87@aol.com
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
solving this equation by either using the quadratic formula, by factoring or by completing the square..
3x^2 = 15x + 10
completing the square
3x^2 - 15x + ____ = 10
We want the coefficient of x^2 to be 1, divide thru by 3
x^2 - 5x + ____ =
find the value to complete the square: (5/2)^2 = 25/4, add to both sides
x^2 - 5x + = +
;
(x - )^2 = +
:
(x - )^2 =
:
(x - ) = +/-
extract he square root of 1/4
x = + =
and
x =
RELATED QUESTIONS
I am having trouble solving x2 -4/3x = -4/9 we can use any method either the quadratic... (answered by mukhopadhyay)
Having trouble understanding these equations!
1) Using the quadratic equation x2 - 3x... (answered by elima)
Using the quadratic equation x^2 - 4x - 5 = 0, perform the following tasks:
Solve by... (answered by ikdeep)
The problem is 6x(squared)+49x-45=0
I'm not sure if I'm solving this correctly, so... (answered by stanbon)
using the quadratic equation x² - 4x - 5 = 0,
perform the following task:
solve by... (answered by AnlytcPhil)
Hello. Here are three problems involving the Quadratic Equation that I am having trouble (answered by ramkikk66)
Hello I am having problems solving this quadratic equation by using the quadratic... (answered by AnlytcPhil)
Using the quadratic equation x3 - 4x + 3 = 0
1. Solve by factoring
2. Solve by... (answered by bmauger)
Good morning! Today I will have a test and I am in trouble with this problem. I... (answered by Fombitz)