SOLUTION: 4x^2+x-20=0

Question 926130: 4x^2+x-20=0
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!

Start with the given equation.

Notice that the quadratic is in the form of where , , and

Let's use the quadratic formula to solve for "x":

Start with the quadratic formula

Plug in , , and

Square to get .

Multiply to get

Rewrite as

Add to to get

Multiply and to get .

or Break up the expression.

So the exact solutions are or
------------------------------------------------------------------------------------------------------------------------

If you need more one-on-one help, email me at jim_thompson5910@hotmail.com. You can ask me a few more questions for free, but afterwards, I would charge you ($2 a problem to have steps shown or $1 a problem for answer only).

Alternatively, please consider visiting my website: http://www.freewebs.com/jimthompson5910/home.html and making a donation. Any amount is greatly appreciated as it helps me a lot. This donation is to support free tutoring. Thank you.

Jim
------------------------------------------------------------------------------------------------------------------------
RELATED QUESTIONS
The exact x values of... (answered by jim_thompson5910)

X^2+y^2+4x+2y-20=0 (answered by Alan3354)

x^2 + y^2 - 4x +12y - 20 = 0 (answered by Fombitz,ikleyn,Alan3354)

x^2+20=4x (answered by jim_thompson5910)

Solve:... (answered by jim_thompson5910)

x^2-4x=0 (answered by vleith)

|x^2-4x|<0 (answered by josgarithmetic)

Solve 4x^2+20=0 (answered by jim_thompson5910)

x^2-4x+2=0 (answered by jojo14344)