document.write( "Question 151075: solve 4^2x-3 = 1/16 \n" ); document.write( "
Algebra.Com's Answer #111000 by jim_thompson5910(35256)\"\" \"About 
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\"4%5E%282x-3%29+=+1%2F16\" Start with the given equation.\r
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\n" ); document.write( "\n" ); document.write( "\"%282%5E2%29%5E%282x-3%29+=+1%2F16\" Rewrite \"4\" as \"2%5E2\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%5E%282%282x-3%29%29+=+1%2F16\" Multiply the exponents.\r
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\n" ); document.write( "\n" ); document.write( "\"2%5E%282%282x-3%29%29+=+2%5E%28-4%29\" Rewrite \"1%2F16\" as \"16%5E%28-1%29=%282%5E4%29%5E%28-1%29=2%5E%28%284%29%28-1%29%29=2%5E%28-4%29\"\r
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\n" ); document.write( "\n" ); document.write( "\"2%282x-3%29=-4\" Since the bases are equal, this means that the exponents are equal.\r
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\n" ); document.write( "\n" ); document.write( "\"4x-6=-4\" Distribute.\r
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\n" ); document.write( "\n" ); document.write( "\"4x=-4%2B6\" Add \"6\" to both sides.\r
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\n" ); document.write( "\n" ); document.write( "\"4x=2\" Combine like terms on the right side.\r
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\n" ); document.write( "\n" ); document.write( "\"x=%282%29%2F%284%29\" Divide both sides by \"4\" to isolate \"x\".\r
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\n" ); document.write( "\n" ); document.write( "\"x=1%2F2\" Reduce.\r
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\n" ); document.write( "\n" ); document.write( "Answer:\r
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\n" ); document.write( "\n" ); document.write( "So the answer is \"x=1%2F2\" \r
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\n" ); document.write( "\n" ); document.write( "Which approximates to \"x=0.5\"
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