document.write( "Question 1004358: GOOD EVENING....Kindly explain why y to the 7 times (-y) to the 6 =y to the 13. Is it not -y to the 13? Thank you \n" ); document.write( "

Algebra.Com's Answer #620858 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
It boils down to the fact that [ minus ] x [ minus ] = [ plus ]
\n" ); document.write( "If you look at $\"+%28-y+%29%5E6+\"$ , you have:
\n" ); document.write( "( -y ) x ( -y ) x ( -y ) x (-y ) x ( -y ) x ( -y )
\n" ); document.write( "Now group in groups of 2
\n" ); document.write( "[( -y ) x ( -y )] x [( -y ) x (-y )] x [( -y ) x ( -y )]
\n" ); document.write( "Now you have:
\n" ); document.write( " $\"+y%5E2+%2A+y%5E2+%2A+y%5E2+=+y%5E6+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+y%5E7%2Ay%5E6+=+y%5E13+\"$
\n" ); document.write( "---------------------
\n" ); document.write( "If you had $\"+%28-y%29%5E5+\"$ , then
\n" ); document.write( "[( -y ) x ( -y )] x [( -y ) x (-y )] x (-y) =
\n" ); document.write( " $\"+y%5E2+%2A+y%5E2+%2A%28+-y+%29+=+-y%5E5+\"$
\n" ); document.write( "and
\n" ); document.write( " $\"+y%5E7%2A%28-y%5E5+%29+=+-y%5E12+\"$
\n" ); document.write( "Hope this helps \n" ); document.write( "

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