Asked by Ciara
Find the x-intercepts (if any) for the graph of the quadratic function. 6x2 +12x+5=0
Give your answers in exact form. Show your work.
Give your answers in exact form. Show your work.
Answers
Answered by
Steve
by precalc you should surely know how to find the roots of a quadratic. What did you get?
Answered by
Ciara
6x2 ?
Answered by
Steve
ever hear of the quadratic formula?
x = (-12±√(144-120))/(2*6)
x = (-12±√(144-120))/(2*6)
Answered by
Ciara
B^2-4AC=
144-120= 24
x=12+sqrt24 / 12
2*2*2*3
sqrt24=sqrt2*2*2*3= + 2* sqrt6
x=(12+2*2.449)/12
x =(12+√24)/12=1+1/6√ 6 = 1.408
144-120= 24
x=12+sqrt24 / 12
2*2*2*3
sqrt24=sqrt2*2*2*3= + 2* sqrt6
x=(12+2*2.449)/12
x =(12+√24)/12=1+1/6√ 6 = 1.408
Answered by
Steve
you are correct about
x = (12+√24)/12
There is also
x = (12-√24)/12
x = (12+√24)/12
There is also
x = (12-√24)/12
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