document.write( "Question 382349: 1) solve the equation 4^x-3*2^x-4=0\r
\n" ); document.write( "\n" ); document.write( "2)solve the equation log2(x-4)-log2(x+3)=8 \n" ); document.write( "

Algebra.Com's Answer #271011 by Fombitz(32388) $\"\"$ $\"About$

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1) No solution. No power of 2 or 4 could ever equal zero.
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\n" ); document.write( "2) $\"log%282%2C%28%28x-4%29%28x%2B3%29%29%29=8\"$
\n" ); document.write( " $\"%28x-4%29%28x%2B3%29=2%5E8\"$
\n" ); document.write( " $\"x%5E2-x-12=256\"$
\n" ); document.write( " $\"x%5E2-x-268=0\"$
\n" ); document.write( "Use the quadratic formula to solve for x.
\n" ); document.write( "Only the positive value is a solution because of the restrictions with the log function.\r
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