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Verified Answer :

\(\sqrt{18 x^{9} y^{4} } = \\ = \sqrt{9*2 x^{8}*x* y^{4} }= \\ 3 x^{4} y^{2} \sqrt{2x}\)
Answer:  B ) 3x^4y^2sqrt 2x

Answer:

Option B is correct

\(3\cdot x^4 \cdot y^2 \sqrt{2x}\)

Step-by-step explanation:

Given the expression: \(\sqrt{18x^9y^4}\)

Using exponent rule:

\(\sqrt[n]{x^n} = x\)


we can write:

18 = \(3 \cdot 3 \cdot 2 = 3^2 \cdot 2\)

\(x^9 = x^4\cdot x^4 \cdot x\)

\(y^4 = (y^2)^2\)

then;

\(\sqrt{18x^9y^4}\) = \(\sqrt{3^2 \cdot 2 \cdot x^4 \cdot x^4 \cdot x \cdot (y^2)^2} = 3\cdot x^4 \cdot y^2 \sqrt{2x}\)

Therefore, the following is equal to \(\sqrt{18x^9y^4}\) is \(3\cdot x^4 \cdot y^2 \sqrt{2x}\)