Q. Assuming x and y are both positive, write the following expression in simplest radical form.654x7y2Answer:
Factorize 54: We need to simplify the expression 654x7y2. Let's start by factoring the number 54 into its prime factors and simplifying the expression inside the square root.54 can be factored into 2×27, and 27 is 33. So we can rewrite 54 as 2×33.
Express factors separately: Now we can express the square root of each factor separately: 654x7y2=62×33×x7×y2.
Take out perfect squares: We can take out the square root of any perfect squares from under the radical. Since 33 contains a perfect square, which is 32, and x7 contains a perfect square, which is x6, and y2 is already a perfect square, we can simplify further:62×33×x7×y2=6×3×x3×y×2×3×x.
Multiply constants and variables: Now we multiply the constants and the variables that are outside the square root: 6×3×x3×y=18x3y.So the expression becomes:18x3y×2×3×x.
Simplify expression inside square root: Finally, we can simplify the expression inside the square root by combining the constants: 2×3×x=6x. So the entire expression simplifies to: 18x3y×6x.
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