SOLUTION: solving quadratic equations by completing the square HELP PLEASE x^2+4+1=0 or like x^2+x-1=0 thank you!!

Question 481104: solving quadratic equations by completing the square

HELP PLEASE

x^2+4+1=0
or like
x^2+x-1=0

thank you!!
Answer by nerdybill(7384) (Show Source): You can put this solution on YOUR website!
You forgot the x-term:
I'm assuming instead of:
x^2+4+1=0
you meant:
x^2+4x+1=0
x^2+4x=-1
half b then double -- add to both sides:
x^2+4x+4=-1+4
(x+2)^2 = 3
x+2 = sqrt(3)
x = +-sqrt(3) - 2
x = {-3.732, -0.268}
.
.
x^2+x-1=0
x^2+x = 1
x^2+x+ 1/4 = 1 + 1/4
(x+ 1/2)^2 = 1.25
(x+.5)^2 = 1.25
x+.5 = sqrt(1.25)
x = +-sqrt(1.25) - .5
x = {-1.618, 0.618}

RELATED QUESTIONS
solving quadratic equations by completing the square HELP PLEASE im so... (answered by mananth)

Solving Quadraticc Equations by Completing the Square 2x^2 - x + 6 = 0 Thank you... (answered by jim_thompson5910)

Please help me solve this equation: x^2+3/5x-1=0 It is called completing the square... (answered by jim_thompson5910)

Please help me solve this equation: x^2+5x-11/4=0 It is called "completing the square" (answered by jim_thompson5910)

Please help me solve this equation: x^2+11x+21/4=0 It is called completing the square... (answered by Mathtut)

can you please help me solve by completing the square of: (((... (answered by Mathtut)

can you please help me solve by completing the square ((( x^2-x-1=0... (answered by solver91311)

can you please help me solve by completing the square of ((( x^2-x-1=0... (answered by josmiceli)

1) Solve the quadratic equations by factoring: 5x� = 125 2) Solve the quadratic... (answered by checkley71)