Saturday, December 5, 2009

For the equation x - 2 鈭歺 = 0, perform the following: solve for all values of x that satisfies the e

Give answer and show work.



For the equation x - 2 鈭歺 = 0, perform the following: solve for all values of x that satisfies the equationconcert venue



x - 2rtx = 0



Add 2rtx to both sides



x = 2rtx



Divide both sides by 2



x/2 = rtx



To get rid of the square root, square both sides.



x^2 / 4 = x



Multiply by 4.



x^2 = 4x



Subtract 4x from both sides to get the equation equal to zero.



x^2 - 4x = 0



Factor out an x



x(x-4) = 0



Set each factor equal to zero and solve for x.



x = 0 and x-4 = 0



Hope this helps. Good Luck.



For the equation x - 2 鈭歺 = 0, perform the following: solve for all values of x that satisfies the equationevents opera theater



set x = 2* x^1/2 to solve



square both sides to get: x^2 = 4x



The only answer that works here is x=4
x= 4
x = 2鈭歺



x2 = 4x



x2 - 4x = 0



x(x-4) = 0



x = 0



x = 4
x - 2 鈭歺 = 0



x = 2 鈭歺



Square both sides



x^2 = 4x



x^2 - 4x = 0



x(x - 4) = 0



x = 0, x = 4



When you square both sides of an equation, you might introduce a redundant root, so check all the results in the original equation



0 - 2鈭? = 0



0 = 0



4 - 2鈭? = 0



4 - 2*2 = 0



0 = 0



Hopefully I did it right.
x - square root of x = 0....original equation



x = square root of x......plus square of x on both sides



x = {0,1}



0*0=0 0's square root is 0



1*1=1 1's square root is 1



Square root is use for numbers like x^2, y^2. So the only numbers that has the same value even it's multiplied on itself are 0 and 1 only. By the way, even though (-1) * (-1) =1, but it may not work in this equation.
x - 2 鈭歺 = 0



x=2鈭歺



x^2=4x



x=4

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