document.write( "Question 1043783: 4^(x-1) =8. Solve for x \n" ); document.write( "

Algebra.Com's Answer #658947 by MathLover1(20850) $\"\"$ $\"About$

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\n" ); document.write( " $\"4%5E%28x-1%29+=8\"$ .....recall, we can write $\"4\"$ as $\"2%5E2\"$ and $\"8\"$ as $\"2%5E3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"%282%5E2%29%5E%28x-1%29+=2%5E3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2%5E%282%28x-1%29%29+=2%5E3\"$ ........now, if bases are same, exponents are same too\r
\n" ); document.write( "\n" ); document.write( " $\"2%28x-1%29+=3\"$ .......solve for $\"x\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2x-2+=3\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2x+=3%2B2\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"2x+=5\"$ \r
\n" ); document.write( "\n" ); document.write( " $\"x+=5%2F2\"$ \r
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