the expression is

\(\displaystyle \sqrt{5x^{2}y}\sqrt{3y}\)

these are my steps:

\(\displaystyle \sqrt{15x^{2}y^{2}}

\left |x \right |\left | y \right |\sqrt{15}\)

however in the book the answer is :

\(\displaystyle \left |x \right | y\sqrt{15}\)

why are not the absolute value bars surrounding the y? :help:

\(\displaystyle \sqrt{5x^{2}y}\sqrt{3y}\)

these are my steps:

\(\displaystyle \sqrt{15x^{2}y^{2}}

\left |x \right |\left | y \right |\sqrt{15}\)

however in the book the answer is :

\(\displaystyle \left |x \right | y\sqrt{15}\)

why are not the absolute value bars surrounding the y? :help:

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