document.write( "Question 1038497: (a) Expand (a + 1/a)^2
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document.write( "(b) Given that a + 1/a =7, use your result in (a) to find the value of a^2 + 1/a^2 \n" );
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Algebra.Com's Answer #653218 by Alan3354(69443)![]() ![]() You can put this solution on YOUR website! (a) Expand (a + 1/a)^2 \n" ); document.write( "= a^2 + 2 + 1/a^2 \n" ); document.write( "-------------- \n" ); document.write( "(b) Given that a + 1/a =7, use your result in (a) to find the value of a^2 + 1/a^2 \n" ); document.write( "(a + 1/a)^2 = a^2 + 2 + 1/a^2 \n" ); document.write( "7^2 = a^2 + 2 + 1/a^2 = 49 \n" ); document.write( "a^2 + 1/a^2 = 47 \n" ); document.write( " \n" ); document.write( " |