document.write( "Question 721056: Solve x^2-7x-8=0 is three different. Ways \n" ); document.write( "

Algebra.Com's Answer #442160 by lynnlo(4176) $\"\"$ $\"About$

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(1)USE QUADRATIC FORMULA
\n" ); document.write( "X(X-3)=0
\n" ); document.write( "X=0,X=3
\n" ); document.write( "X^2+7X-8=0
\n" ); document.write( "x=8,-1
\n" ); document.write( "(2)FACTOR USING INVERSE FOIL
\n" ); document.write( "X^2-8X+X-8=0
\n" ); document.write( "X(X-8)-(X-8)=0
\n" ); document.write( "(X-8)(X-1)=0
\n" ); document.write( "X=8 OR X=1\r
\n" ); document.write( "\n" ); document.write( "(3)SOLVE FOR X
\n" ); document.write( "X^2=-7X+8
\n" ); document.write( "X^2+7X-8=0
\n" ); document.write( "(X+8)(X-1)=0
\n" ); document.write( "X=-1,8 \n" ); document.write( "

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