document.write( "Question 1151518: The first figure takes 5 matchstick squares to​ build, the second takes 13 to​ build, and the third takes 21 to​ build, as can be seen by clicking on the icon below.
\n" ); document.write( "​(a​) How many matchstick squares will it take to build the 9th ​figure? ​
\n" ); document.write( "(b​) How many matchstick squares will it take to build the nth​ figure?
\n" ); document.write( "​(c​) How many matchsticks will it take to build the nth​ figure?\r
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\n" ); document.write( "\n" ); document.write( "Thank you for your help
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Algebra.Com's Answer #773290 by ikleyn(52797)\"\" \"About 
You can put this solution on YOUR website!
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\n" ); document.write( "\n" ); document.write( "I can not click the icon you mention in your post.\r
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\n" ); document.write( "\n" ); document.write( "So, I can not be a full scale participant in the solution of the problem.\r
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\n" ); document.write( "\n" ); document.write( "Sorry . . . \r
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