Simplifying Radicals - Part 3

Simplifying Radicals - Part 2
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[sy]

Thank you for explaining. As for ③, I think it includes incorrect math theory. √(x^4) = x^2 and √(z^12) = z^6 are correct. But, √(y^10) is not y^5 .
(x^n)^[1/(even number)] needs attention. For example, √(x^2) = |x| . ( √(x^2) = x is NOT correct. ) It is well-known math theory.
Thus, √(y^10) = (y^4) |y| or |y|^5 . Therefore, I think the answer of ③ is 9 (x^2) (y^4) |y| (z^6) √(yz) . [Or 9 (x^2) (|y|^5) (z^6) √(yz) ]
If the answer of the ③ in the video is correct, the problem needs the condition y≧0 .

[Ricoyanfan]

Teacher gon sana po gumawa po kayo ng complex rational expressions na grade 9