document.write( "Question 1114763: If(3x+5)^2=ax^2+bx+c, what is the value of a+b+c? \n" ); document.write( "

Algebra.Com's Answer #729685 by ikleyn(52811) $\"\"$ $\"About$

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document.write( "a + b + c   is the value of the right hand side at  x = 1.\r\n" );
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document.write( "Hence,  a + b + c  is equal to the value of the left hand side at  x= 1, i.e.\r\n" );
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document.write( "a + b + c = (3*1 + 5)^2 = 8^2 = 64.\r\n" );
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document.write( "Answer.  a + b + c = 64.\r\n" );
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\n" ); document.write( "\n" ); document.write( "The lesson to learn from this solution: \r
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document.write( "    You do not need to open parentheses and manipulate with the coefficients.\r\n" );
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document.write( "    There is much more simple and straightforward way,\r\n" );
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document.write( "        and the problem simply wants to check if you know this way.\r\n" );
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\n" ); document.write( "\n" ); document.write( "Good problem for an interview on a Math position, when the employer wants to check if you are/were trained in Math.\r
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