SOLUTION: Please help with this problem: {{{2x^2+8x+1=0}}} Thanks

Question 144457This question is from textbook
: Please help with this problem:

Thanks This question is from textbook

Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
Let's use the quadratic formula to solve for x:

Starting with the general quadratic

the general solution using the quadratic equation is:

So lets solve ( notice , , and )

Plug in a=2, b=8, and c=1

Square 8 to get 64

Multiply to get

Combine like terms in the radicand (everything under the square root)

Simplify the square root (note: If you need help with simplifying the square root, check out this solver)

Multiply 2 and 2 to get 4

So now the expression breaks down into two parts

or

Now break up the fraction

or

Simplify

or

So our answers are

or

which approximate to

or
RELATED QUESTIONS
Pls , help me to solve this problem" (2x^3+x^2)-(8x-4)=0 Thanks (answered by midwood_trail)

could you please help me with this problem Divide: {{{ (x^3-2x^2-8x+5)divided by (x-1) (answered by venugopalramana)

Please help me solve this : |2X+1|-2<0... (answered by jsmallt9)

Hello, can I get some help with this problem please? 1/x-2 - 2/x^2-2x =3... (answered by Fombitz,ewatrrr)

please help me with this problem... (answered by rfer)

Please help me solve this problem thanks! 3/x^2+8x+15/2/x+3 -... (answered by Alan3354)

Can someone please help me with this division problem? I am totally lost.... (answered by ankor@dixie-net.com)

CAN SOMEONE PLEASE HELP ME WITH THIS PROBLEM: FIND THE HORIZONTAL ASYMPTOTE, IF ANY,... (answered by jim_thompson5910)

Please help me with this equation... (answered by josgarithmetic,Alan3354)