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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 <10; 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] = 'Find the square root of 75.'; question[1] = 'Find the square root of 1072.'; question[2] = 'Find the square root of 1174.'; question[3] = 'Find the square root of 100.'; question[4] = 'SQRT(8) + SQRT(12)'; question[5] = 'SQRT(7) + SQRT(28)'; question[6] = 'SQRT(8) + SQRT(2)'; question[7] = 'Find the square root of 25'; question[8] = 'Find the square root of 16'; question[9] = 'SQRT(25) + SQRT(16)'; answer[0] = '5SQRT(3)'; answer[1] = '4SQRT(67)'; answer[2] = 'SQRT(1174)'; answer[3] = '10'; answer[4] = '2SQRT(2)+2SQRT(3)'; answer[5] = '3SQRT(7)'; answer[6] = '3SQRT(2)'; answer[7] = '5'; answer[8] = '4'; answer[9] = '9'; explain[0] = '#1

Find the square root of 75.

Write as a product of prime factors.

SQRT(5 * 5 * 3)

Use the definition of square roots.

5SQRT(3)

'; explain[1] = '#2

Find the square root of 1072.

Write as a product of prime factors.

SQRT(2*2*2*2*67)

Use the definition of square roots.

4SQRT(67)

'; explain[2] = '#3

Find the square root of 1174

Write as a product of prime factors.

SQRT(2*587)

Use the definition of square roots, if it applies.

SQRT(1174)

'; explain[3] = '#4

Find the square root of 100.

Write as a product of prime factors.

SQRT(2*2*5*5)

Use the definition of square roots, if it applies.

10

'; explain[4] = '#5

SQRT(8) + SQRT(12)

Write as a product of prime factors.

SQRT(2*2*2) + SQRT(2*2*3)

Use the definition of square roots, if it applies.

2SQRT(2)+2SQRT(3)

'; explain[5] = '#6

SQRT(7) + SQRT(28)

Write as a product of prime factors.

SQRT(7) + SQRT(2*2*7)

Use the definition of square roots, if it applies.

SQRT(7) + 2SQRT(7)

Combine like terms.

3SQRT(7)

'; explain[6] = '#7

SQRT(8) + SQRT(2)

Write as a product of prime factors.

SQRT(2*2*2) + SQRT(2)

Use the definition of square roots, if it applies.

2SQRT(2) + SQRT(2)

Combine like terms.

3SQRT(2)

'; explain[7] = '#8

Find the square root of 25

Write as a product of prime factors.

SQRT(5*5)

Use the definition of square roots, if it applies.

5

'; explain[8] = '#9

Find the square root of 16

Write as a product of prime factors.

SQRT(4*4)

Use the definition of square roots, if it applies.

4

'; explain[9] = '#10

SQRT(25) + SQRT(16)

Write as product of prime factors.

SQRT(5*5) + SQRT(4*4)

Use the definition of square roots, if it applies.

5 + 4