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2006-10-24 12:30:50 · 7 answers · asked by sexy sunbather 1 in Education & Reference Home Schooling

7 answers

general ecuation

x = [-b +/- sqrt(b^2-4ac)]/2a

x = {-(-4) +/- sqrt[(-4)^2 - (4)(2)(1)]} / 2(2)

x = [4 +/- sqrt(16-8)] / 4

x = [4 +/- 2.828] / 4

x1 = (4 + 2.828) / 4 = 1.707

x2 = (4 - 2.828) / 4 = 0.293

2(1.707)^2 - 4(1.707) + 1 = 0
5.828 - 6.828 + 1 = 0

2(0.293)^2 - 4(0.293) + 1 = 0
0.172 - 1.172 + 1 = 0

I hope this helps

2006-10-24 13:15:47 · answer #1 · answered by alexandrobilan 2 · 0 0

denbronco is wrong, alexandro is right - use the quadratic formula.

If you re-multiply the "factors" denbronco came up with [(2x-1)(x-1)], you end up with 2x^2-3x+1, which is NOT your original equation.

2006-10-25 09:08:16 · answer #2 · answered by homeschoolmom 5 · 0 0

Factor it.

2X^2-4X+1=0

(2X-1)(x-1)

Now you have 2 equations.

2X-1=0
2X=1

X1=1/2 or .5

X-1=0
X=1

X2=1

2006-10-24 20:31:06 · answer #3 · answered by Anonymous · 0 0

2 +/- square root of 2

2006-10-24 19:38:10 · answer #4 · answered by Anonymous · 0 0

i think its (2x-1)^2
and x=1/2 well i guess this isnt help, just the answer, but yeah :)

2006-10-24 19:40:28 · answer #5 · answered by Anonymous · 0 0

denbroncos got it right

2006-10-24 21:58:37 · answer #6 · answered by chompsey 1 · 0 0

try math.com

2006-10-24 19:43:02 · answer #7 · answered by JaneDivided 4 · 0 0

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