document.write( "Question 1118936: If x^y = a and x^4y-4 = 77, find the value of a \n" ); document.write( "
Algebra.Com's Answer #734388 by MathTherapy(10552)\"\" \"About 
You can put this solution on YOUR website!
If x^y = a and x^4y-4 = 77, find the value of a
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\"matrix%281%2C3%2C+x%5E%284y%29+-+4%2C+%22=%22%2C+77%29\"
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document.write( "\"matrix%281%2C3%2C+x%5E%284y%29%2C+%22=%22%2C+81%29\"
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document.write( "\"matrix%281%2C3%2C+x%5E%284y%29%2C+%22=%22%2C+3%5E4%29\"
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document.write( "\"matrix%281%2C3%2C+%28x%5Ey%29%5E4%2C+%22=%22%2C+3%5E4%29\"
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document.write( "\"matrix%281%2C3%2C+highlight%28%28x%5Ey%29%29%5E4%2C+%22=%22%2C+highlight%283%29%5E4%29\"
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document.write( "\"matrix%281%2C3%2C+highlight%28%28a%29%29%5E4%2C+%22=%22%2C+highlight%283%29%5E4%29\" ------ Substituting \"matrix%281%2C3%2C+a%2C+for%2C+x%5Ey%29\"
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document.write( "\"matrix%281%2C7%2C+x%5Ey%2C+%22=%22%2C+a%2C+and%2C+x%5Ey%2C+%22=%22%2C+3%29\", and so, \"highlight_green%28matrix%281%2C3%2C+a%2C+%22=%22%2C+3%29%29\" \n" );
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