document.write( "Question 252269: how can we know that equation has no solution?im a bit confusing about that.
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document.write( "check this out ; x=rootx-6 ,ive been work it out and find that x=3 x=-2 then i look at the answers from the back and it just written as no solution .really confused! -_- \n" );
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Algebra.Com's Answer #184102 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! how can we know that equation has no solution? \n" ); document.write( "I'm a bit confused about that. \n" ); document.write( "check this out ; x = root(x-6). \n" ); document.write( "I've been working it out and find that x=3 x=-2 then i look at the answers from the back.It says no solution. Really confused! \n" ); document.write( "---------------- \n" ); document.write( "Your Problem: \n" ); document.write( "x = sqrt(x-6) \n" ); document.write( "Square both sides to get: \n" ); document.write( "x ^2 = x-6 \n" ); document.write( "x^2 - x + 6 = 0 \n" ); document.write( "(x-3)(x+2) = 0 \n" ); document.write( "x = 3 or x = -2 \n" ); document.write( "----- \n" ); document.write( "Checking the answers in the original equation. \n" ); document.write( "Can x = 3 ? \n" ); document.write( "No because sqrt(3-6) = sqrt(-3) is not a Real Number. \n" ); document.write( "-------------- \n" ); document.write( "Can x = -2 ? \n" ); document.write( "No because sqrt(-2-6) = sqrt(-8) is not a Real Number. \n" ); document.write( "--------------- \n" ); document.write( "Therefore there is no solution for your problem. \n" ); document.write( "=============================================== \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |