SOLUTION: Ok so in algebra today we learned like 2 days ago the QUADRATIC FORMULA...well i just dont understand how to solve it. for ex.
{{{3x^2+4x-8=0}}}
I dont understand how to do the
Algebra.Com
Question 417052: Ok so in algebra today we learned like 2 days ago the QUADRATIC FORMULA...well i just dont understand how to solve it. for ex.
I dont understand how to do the steps to get the answer
so i do x=-4+/-=sqrt (4)^2-4(3)(-8)
then x= +/-+sqrt 16-96/ 2x3
i dont know where to go from there.
Found 2 solutions by checkley79, Earlsdon:
Answer by checkley79(3341) (Show Source): You can put this solution on YOUR website!
3x^2+4x-8=0
x=(-4+-sqrt[4^2-4*3*-8])/2*3
x=(-4+-sqrt[16+96])/6
x=(-4+-sqrt112)/6
x=(-4+-10.583)/6
x=(-4+10.583)/6
x=6.583/6
x=1.097 ans.
x=(-4-10.583)/6
x=-14.853/6
x=-2.43 ans.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
It's not nearly as complicated as you make it seem.
The formula is:
To solve for x in: Substitute into the formula: a = 3, b = 4, and c = -8 as you did already.
Now simplify his lot.
Now simplify the square root.
so put the 4 in front of the radical leaving the 7 inside.
and Simplify the fractions.
and
RELATED QUESTIONS
Ok so today i have just started high school, my 3rd high school, and in class today my... (answered by stanbon)
Ok right now in algebra class we are learning about "standard form" w/ linear equations.. (answered by stanbon)
even though we have our books in algebra...
I do not understand what our teacher is... (answered by stanbon)
Hello I have a lot of math to do for homework and I forgot how to do it since we just... (answered by josgarithmetic)
Well Hello,
Mr. or Ms. well hey my Names Dayanne i am in 8 th grade trying to learn... (answered by Alan3354)
Hello dear tutor,
I need help with a certain math problem today that we just learned in (answered by josmiceli)
Im doing a homework worksheet on Solving Inequalities. We have to plot it on the graph.... (answered by stanbon)
We learned how to factor trinomials awhile ago, by unfoiling like {{{x^2+2x-3}}} would be (answered by Stitch)
Hello dear tutor,
I need help with a certain math problem today that we just learned in (answered by stanbon)