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0nadia0
I hate math. Think its mainly because i've been making silly mistakes, but here it is: 3X^2+14X-5=0
_unsure.gif hides in corner
anyone care to help our give guidance? :)
doiink
ax^2+bx+c=0

(-b + √ (b^2 - 4ac))/2a


for the equation X^2+14X-5=0
a = 3
b = 14
c = -5

so substitute the values in:

[-14 + √ (14^2 - 4(3)(-5) ] /2(3)

[-14 +√( 196 + 60)] /6

[-14+√(256)] /6

and because the quadratic equation is +, you need to use the equation once with addition, and once with subtraction

[-14+√(256)] /6 = -.333

[-14 - √(256)] /6 = -5
0nadia0
Thank you! _smile.gif
doiink
closed
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