document.write( "Question 185789: can you please help me to answer this queation its all abot the completing square x2-8x+15=0 \n" ); document.write( "
Algebra.Com's Answer #139329 by vleith(2983)\"\" \"About 
You can put this solution on YOUR website!
\"x%5E2-8x%2B15=0\"
\n" ); document.write( "\"x%5E2-8x+=+-15\" take half of 8 to get 4. then square that to get 16. Then add 16 to both sides
\n" ); document.write( "\"x%5E2+-8x+%2B+16+=+-15+%2B+16\"
\n" ); document.write( "\"%28x-4%29%5E2+=+1\"
\n" ); document.write( "Take square root of both side
\n" ); document.write( "(x-4) = 1 or (x-4) = -1
\n" ); document.write( "x = 5 or x = 3
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