Answer:
6 y^2 sqrt(2)
Explanation:
We know that sqrt(a) * sqrt(b) = sqrt(ab)
sqrt(12) sqrt(y^3) sqrt(6y)
sqrt(12*y^3*6y)
sqrt(72 y^4)
sqrt(36 *2 *y^4)
sqrt(36) sqrt(2) sqrt(y^4)
6 sqrt(2) y^2
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