[radicals][section 58]
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(1.) √16 here is the problem
= 4 take the square root of 16
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(2.) √49 here is the problem
= 7 take the square root of 49
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(3.) -√144 here is the problem
= -12 take the square root of 144
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(4.) -√81 here is the problem
= -9 take the square root of 81
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(5.) √1002 here is the problem
= 100 cancel
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(6.) (√13)2 here is the problem
= 13 cancel
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(7.) √64c6 here is the problem
= 8c3 take the square root of 64c6
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(8.) -√4x2y2 here is the problem
= -2xy take the square root of 4x2y2
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(9.) √2.25 here is the problem
= 1.5 take the square root of 2.25
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(10.) √r12t6 here is the problem
= r6t3 take the square root of r12t6