document.write( "Question 144662: f(x)= x^2 -4 find roots and graph \n" ); document.write( "

Algebra.Com's Answer #105412 by checkley77(12844) $\"\"$ $\"About$

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f(x)=x^2-4
\n" ); document.write( "f(x)=(x-2)(x+2)
\n" ); document.write( "x-2=0
\n" ); document.write( "x=2 or (2,0)
\n" ); document.write( "x+2=0
\n" ); document.write( "x=-2 or (-2,0)
\n" ); document.write( "y=-4 or (0,-4)
\n" ); document.write( " $\"+graph%28+300%2C+200%2C+-6%2C+5%2C+-10%2C+10%2C+x%5E2+-4%29+\"$ (graph 300x200 pixels, x from -6 to 5, y from -10 to 10, x^2 -4). \n" ); document.write( "

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