document.write( "Question 139885This question is from textbook Algebra 1
\n" ); document.write( ": what is the answer to this: the square root of the sum of a number and 7 is 8. find the number \n" ); document.write( "

Algebra.Com's Answer #101955 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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what is the answer to this:
\n" ); document.write( "Let x = \"a number\"
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\n" ); document.write( "\"the square root of the sum of a number and 7 is 8.\"
\n" ); document.write( " $\"sqrt%28x%2B7%29\"$ = 8
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\n" ); document.write( "x + 7 = 64; squared both sides
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\n" ); document.write( "x = 64 - 7
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\n" ); document.write( "x = 57
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\n" ); document.write( "Check solution:
\n" ); document.write( " $\"sqrt%2857%2B7%29\"$ = 8
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