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Assuming 
x and 
y are both positive, write the following expression in simplest radical form.

6xy^(2)sqrt(28x^(6)y^(2))
Answer:

Assuming x x and y y are both positive, write the following expression in simplest radical form.\newline6xy228x6y2 6 x y^{2} \sqrt{28 x^{6} y^{2}} \newlineAnswer:

Full solution

Q. Assuming x x and y y are both positive, write the following expression in simplest radical form.\newline6xy228x6y2 6 x y^{2} \sqrt{28 x^{6} y^{2}} \newlineAnswer:
  1. Factor and Separate Perfect Squares: Factor the expression inside the square root to separate perfect squares from non-perfect squares. 28x6y2\sqrt{28x^{6}y^{2}} can be factored into 4×7×x6×y2\sqrt{4 \times 7 \times x^{6} \times y^{2}}. 44 and x6x^{6} are perfect squares, so they can be taken out of the square root. 4×7×x6×y2=4×x6×7×y2\sqrt{4 \times 7 \times x^{6} \times y^{2}} = \sqrt{4} \times \sqrt{x^{6}} \times \sqrt{7} \times \sqrt{y^{2}}
  2. Simplify Perfect Squares: Simplify the square roots of the perfect squares. 4=2\sqrt{4} = 2, x6=x3\sqrt{x^{6}} = x^{3}, and y2=y\sqrt{y^{2}} = y because xx and yy are positive. So, we have 2×x3×y×72 \times x^{3} \times y \times \sqrt{7}.
  3. Multiply by Outside Term: Multiply the simplified square roots by the outside term 6xy26xy^{2}.6xy2×(2×x3×y×7)=6×2×x×x3×y2×y×76xy^{2} \times (2 \times x^{3} \times y \times \sqrt{7}) = 6 \times 2 \times x \times x^{3} \times y^{2} \times y \times \sqrt{7}
  4. Combine Like Terms: Combine like terms by adding the exponents for xx and yy.6×2=126 \times 2 = 12, x×x3=x1+3=x4x \times x^{3} = x^{1+3} = x^{4}, y2×y=y2+1=y3y^{2} \times y = y^{2+1} = y^{3}. So, we have 12×x4×y3×712 \times x^{4} \times y^{3} \times \sqrt{7}.
  5. Write Final Expression: Write the final simplified expression.\newlineThe expression in simplest radical form is 12x4y3712x^{4}y^{3}\sqrt{7}.

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