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Answers and Explanations'); parent.frames[0].document.write('

The problems you missed are listed below with answers and explanations.  Look over the explanation for each problem so you can understand why you missed it!

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'); resetdisplay(); for(var i = 0; i <5; i++) { ganswer[i] = prompt(question[i],""); if (ganswer[i] == "quit" || ganswer[i] == "QUIT" || ganswer[i] == "Quit") { break; } q++; if (ganswer[i] == answer[i]) { c++; } else { rightans[i] = 0; w++; } resetdisplay(); } for(var i = 0; i < 10; i++) { if (rightans[i] == 0) { expl = expl + explain[i]; } } parent.frames[0].document.write(expl); parent.frames[0].document.write(""); } question[0] = 'Every positive real number has how many square roots?'; question[1] = 'One of the square roots of a positive number is also positive. Is the other one?'; question[2] = 'Can you take the cube of a negative number?'; question[3] = 'Can the principle cube root be negative?'; question[4] = 'When you have a root in the denominator, it is declared irrational, so the process of removing the root is called what?'; answer[0] = '2'; answer[1] = 'no'; answer[2] = 'yes'; answer[3] = 'yes'; answer[4] = 'rationalizing'; explain[0] = '#1

Every positive real number has a positive and negetive root. If you recall correctly, a negative number squared equals a positive number. Each positive real number then has 2 real square roots.

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The second root of a positive number is a negative number not another positive.

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Cube roots do not involve the same thing as square roots. If you cube a negative number you get a negative number, if you square a negative number you get a positive, therefore cube roots of negative numbers exist within real numbers, where as roots of negative numbers do not.

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Unlike Square roots, Cube roots only have one answer, it is either positive or negative (it will be the same as the original number). Yes cube roots may have negative primary root, but there is no other cube root for that number.

'; explain[4] = '#5

Rationalizing a function is the name of the process of removing roots (irrational numbers) from the denominator.

'; rightans[0] = 1; rightans[1] = 1; rightans[2] = 1; rightans[3] = 1; rightans[4] = 1; //-->