document.write( "Question 737638: for which of the following equations are x=5and x=-5........................... A x2-x^2-5x-25=0.....B..x^2+25=0......C.. x^2+10x-25=0....D.. x^2-25=0 \n" ); document.write( "
Algebra.Com's Answer #450469 by mananth(16946)\"\" \"About 
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D.x^2-25
\n" ); document.write( "(x+5)(x-5)=0\r
\n" ); document.write( "\n" ); document.write( "so x=5 or x=-5
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