document.write( "Question 1208661: Solve for b.\r
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Algebra.Com's Answer #847049 by ikleyn(52787) $\"\"$ $\"About$

You can put this solution on YOUR website!
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document.write( "You start from\r\n" );
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document.write( "     +  = c.\r\n" );
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document.write( "    As your starting equation is written in this form, \r\n" );
document.write( "    it is assumed implicitly that a =/=0,  b =/= 0.\r\n" );
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document.write( "Isolate the term with b in the left side\r\n" );
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document.write( "     = c - .\r\n" );
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document.write( "Since left side is the fraction, write right side as a fraction, too\r\n" );
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document.write( "     = .\r\n" );
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document.write( "It is the same as \r\n" );
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document.write( "     = .\r\n" );
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document.write( "Since    is now in the denominator, turn both fractions upside down\r\n" );
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document.write( "     = .\r\n" );
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document.write( "Multiply both sides by  \r\n" );
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document.write( "     = .\r\n" );
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document.write( "Now take square roots of both sides\r\n" );
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document.write( "    b = +/-  = +/- .\r\n" );
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document.write( "Any of these two final expressions is the desired expression for b.\r\n" );
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document.write( "This final expression is valid under assumption that  ac-x =/= 0 and the expression under the square root is positive.\r\n" );
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