document.write( "Question 160018: Find the x-intercepts(if they exits) of the following quadratic functions. Graph the function and mark the intercepts.
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document.write( "f(x)=x^2-6. I am completely confused on how to solve this problem and several others taht are similar. Please if you could show me step by step I'm sure I will be able to figure out the others. \n" );
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Algebra.Com's Answer #117983 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Find the x-intercepts(if they exits) of the following quadratic functions. Graph the function and mark the intercepts. \n" ); document.write( "f(x) = x^2 - 6 \n" ); document.write( ": \n" ); document.write( "Understand that in the graphing world y = f(x), so we have: \n" ); document.write( "y = x^2 - 6 \n" ); document.write( ": \n" ); document.write( "Understand that the x intercept occurs when y = 0, substitute 0 for y: \n" ); document.write( "Solve: \n" ); document.write( "x^2 - 6 = 0 \n" ); document.write( "x^2 = +6; added 6 to both sides \n" ); document.write( "x = + \n" ); document.write( "and \n" ); document.write( "x = - \n" ); document.write( ": \n" ); document.write( "These are x intercepts, approx +2.4494897 and -2.4494897 \n" ); document.write( ": \n" ); document.write( "A graph of this would look like this \n" ); document.write( ": \n" ); document.write( " \n" ); document.write( ": \n" ); document.write( "You can see the x intercepts corresponds to the values we found \n" ); document.write( ": \n" ); document.write( "Did this make sense to you now? \n" ); document.write( " \n" ); document.write( " |