document.write( "Question 393213: how do you translate and solve this equation: If you subtract a number from four times its square, the result is three.\r
\n" ); document.write( "\n" ); document.write( "thank you :) \n" ); document.write( "

Algebra.Com's Answer #279122 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"x\"$ = the unknown number
\n" ); document.write( "It's square is $\"x%5E2\"$
\n" ); document.write( "given:
\n" ); document.write( " $\"4x%5E2+-+x+=+3\"$
\n" ); document.write( " $\"4x%5E2+-+x+-+3+=+0\"$
\n" ); document.write( "Using quadratic formula:
\n" ); document.write( " $\"x+=+%28-%28-1%29+%2B-+sqrt%28+%28-1%29%5E2-4%2A4%2A%28-3%29+%29%29%2F%282%2A4%29+\"$
\n" ); document.write( " $\"x+=+%28+1+%2B-+sqrt%28+1+%2B+48+%29%29+%2F+8+\"$
\n" ); document.write( " $\"x+=+%28+1+%2B+7%29+%2F+8+\"$
\n" ); document.write( " $\"x+=+1\"$
\n" ); document.write( "and, also:
\n" ); document.write( " $\"x+=+%281+-+7%29%2F8\"$
\n" ); document.write( " $\"x+=+-3%2F4\"$
\n" ); document.write( "The answer has to be 1, since -3/4 is not a whole number \n" ); document.write( "

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