document.write( "Question 254067: Hi. I have a question concerning how exponents 'work'.
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document.write( "I understand how exponents 'work' like finding their value and how parenthesis change their value sometimes but that isn't my question. \r
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document.write( "My question is why is it that sometimes exponents come out positive and negative without parenthesis. Like this example... -x^2=y
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document.write( "I understand the concept sorta. To solve do you want to square x then take the negative result or you the negative value of x to square
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document.write( "I know if you graph this equation out the graph will open down but then why is it a regular problem -x^2 is positive (It is poitive right?)\r
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document.write( "Why is it sometimes you get positive and negative answers for the similiar probblems.\r
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document.write( "Is it just with graphing?
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document.write( "Like when you have a negative exponent in graphing you always take the negative or what?
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document.write( "Please help Thanks!\r
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document.write( "PS. I'm unsure liike when someone ask me -2^2 if it is positive or negative \n" );
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Algebra.Com's Answer #186372 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! Any real number squared is positive. \n" ); document.write( "The imaginary number i^2 =-1\r \n" ); document.write( "\n" ); document.write( "A negative exponent has nothing to do with whether the number is positive or negative. x^(-2)=1/(x^2) \n" ); document.write( "I suspect you are confusing sqrt with squares \n" ); document.write( "square roots can be positive or negative \n" ); document.write( "sqrt(25) can be -5 or +5\r \n" ); document.write( "\n" ); document.write( "I am not sure what you mean by parentheses change their value. \n" ); document.write( "The parentheses don't change the value. They just tell you what value to use\r \n" ); document.write( "\n" ); document.write( "for example \n" ); document.write( " x^(2)*y means that only the 2 is the exponent \n" ); document.write( "whereas x^(2y) mean the 2y is the exponent\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( "It would help if you can provide examples for your questions. \n" ); document.write( " |