Solve each equation:

sana125

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May 20, 2005
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I have solved following equation need someone to checked that i have solved it correct or not......Thanks!
Solve each equation:

x(x-2)=3
x^2-2x+3=0 is a prime. so no solution

x^2 = x
x(x+1) = 0
x = 0 or x + 1 = 0
x = 0 or x = -1

2x^2 - 5x + 2 = 0
(x-2)(2x-1)=0
x-2=0 or 2x-1=0
x=2 or x=1/2
 
Hello, sana125!

need someone to checked that i have solved it correct or not

x(x - 2) = 3

x<sup>2</sup> - 2x + 3 = 0 . . . no
Be careful . . . x<sup>2</sup> - 2x .= .3

Then we have: . x<sup>2</sup> - 2x - 3 .= .0


x<sup>2</sup> = x

x(x+1) = 0 . . . no
You have: . x<sup>2</sup> .= .x

Then: . x<sup>2</sup> - x .= .0


The third one is correct!
 
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