document.write( "Question 634606: Solve the following exponential equations:
\n" ); document.write( "a) 7^x=49
\n" ); document.write( "b) 243 = 9^2x+1
\n" ); document.write( "c) 2^2x * 4^4x +8 = 64
\n" ); document.write( "d)9^x-1 * 81 ^2x-1 = 27^3x-2 \n" ); document.write( "
Algebra.Com's Answer #399820 by lwsshak3(11628)\"\" \"About 
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Solve the following exponential equations:
\n" ); document.write( "a) 7^x=49
\n" ); document.write( "7^x=7^2
\n" ); document.write( "x=2
\n" ); document.write( "..
\n" ); document.write( "b) 243 = 9^(2x+1)
\n" ); document.write( "3^5=3^2^(2x+1)
\n" ); document.write( "3^5=3^(4x+2)
\n" ); document.write( "4x+2=5
\n" ); document.write( "4x=3
\n" ); document.write( "x=3/4
\n" ); document.write( "..
\n" ); document.write( "c) 2^2x * 4^(4x +8) = 64
\n" ); document.write( "2^2x * 2^2(4x+8) =2^6
\n" ); document.write( "2^2x*2^(8x+16)=2^6
\n" ); document.write( "2^(10x+16)=2^6
\n" ); document.write( "10x+16=6
\n" ); document.write( "10x=-10
\n" ); document.write( "x=-1
\n" ); document.write( "..
\n" ); document.write( "d)9^(x-1) * 81 ^(2x-1) = 27^(3x-2)
\n" ); document.write( "9^(x-1) * 9^2 ^(2x-1) = 3^3^(3x-2)
\n" ); document.write( "9^(x-1) * 9^(4x-2) = 3^3^(3x-2)
\n" ); document.write( "3^2^(x-1) * 3^2 ^(4x-2) = 3^3^(3x-2)
\n" ); document.write( "3^(2x-2)*3^(8x-4)=3^(9x-6)
\n" ); document.write( "3^(10x-6)=3^(9x-6)
\n" ); document.write( "10x-6=9x-6
\n" ); document.write( "x=0\r
\n" ); document.write( "\n" ); document.write( " \n" ); document.write( "
\n" );