SOLUTION: can some one check this for me please?
solve by using quadratic formula
5x^2+x+7=0
x=_+sqrt-2^2-5*5*7/2*5
(2)+sqrt(-4)5(7)/2(5)
2+16-49/2
2+sqrt33/2
Algebra.Com
Question 80808: can some one check this for me please?
solve by using quadratic formula
5x^2+x+7=0
x=_+sqrt-2^2-5*5*7/2*5
(2)+sqrt(-4)5(7)/2(5)
2+16-49/2
2+sqrt33/2
Found 2 solutions by stanbon, Earlsdon:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solve by using quadratic formula
5x^2+x+7=0
x=[-b+-sqrt(b^2-4ac)]/(2a)
x=[-1+-sqrt(1^2-4*5*7]/(2*5)
x=[-1+-sqrt(-139))]/(10)
x=(-1/10) + (1/10)sqrt(139)i or x=(-1/10) - (1/10)sqrt(139)i
============
Cheers,
Stan H.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Solve for x:
Apply the quadratic formula:
Simplify.
The solutions are the "complex" numbers:
and
If you need the approximate solutions:
and
to the nearest ten thousandth.
RELATED QUESTIONS
Please help me solve this quadratic equation using the quadratic formula.
0.4x^2 + x... (answered by stanbon)
Solve 2x^2 + 5x - 1 = 0 by using quadratic formula. Use coefficients, a=2, b=5, c=-1. My... (answered by jim_thompson5910)
Can someone please check this for me?
solve by using the quadratic formula
x^2=5x+8... (answered by stanbon,Earlsdon)
solve equation using quadratic formula... (answered by checkley77)
can some one check this for me please?
sqrt{{{y+2}}}=5
sqrt{{{y+2}}}=5... (answered by jim_thompson5910)
Please help solve (7 sqrt 7 + 4 sqrt 2)(5 sqrt 7+ 3 sqrt... (answered by 303795)
{{{ sqrt( x+7 )+sqrt ( 3x-2 ) =5... (answered by Alan3354,MathLover1)
Could you please help me with the following?
Solve for x in {{{1-x-(2/(6x+1))=0}}}. My (answered by god2012,MathTherapy)
Please help me solve this equation {{{sqrt(3x-5)=7-sqrt(x +... (answered by scott8148)