document.write( "Question 36143: I definately need help with this problem...thanks so very much\r
\n" ); document.write( "\n" ); document.write( "Apply the quadratic formula to find the roots of the given function, and then graph the function.\r
\n" ); document.write( "\n" ); document.write( "f(x) = x^2 - 4
\n" ); document.write( "

Algebra.Com's Answer #22135 by stanbon(75887)\"\" \"About 
You can put this solution on YOUR website!
f(x) = x^2 - 4
\n" ); document.write( "a=1, b=0, c=-4
\n" ); document.write( "Using the Quadratic formula you get:\r
\n" ); document.write( "\n" ); document.write( "x=-0+sqrt[0^2-4(1)(-4)}/2 = [sqrt(16)]/2 = 4/2=2
\n" ); document.write( "OR
\n" ); document.write( "x=-0-sqrt[0^2-4(1)(-4)}/2 = -[sqrt(16)]/2 = -4/2= -2\r
\n" ); document.write( "
\n" ); document.write( "\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );