Q. Given x>0 and y>0, select the expression that is equivalent to3−125x3y5−5xy35−5x9y155ixy355ix9y15
Simplify Constant Term: Simplify the cube root of the constant term.The cube root of −125 is −5 because (−5)3=−125.
Simplify Variable Term x3: Simplify the cube root of the variable term x3. The cube root of x3 is x because x(3/3)=x1=x.
Simplify Variable Term y5: Simplify the cube root of the variable term y5. Since the exponent 5 is not a multiple of 3, we cannot take the cube root of y5 directly. Instead, we express y5 as y3×y2 and take the cube root of y3, which is y. The remaining y2 stays inside the cube root.
Combine Results: Combine the results from Steps 1, 2, and 3. Combining the cube roots of the constant and variable terms, we get −5xy times the cube root of y2, which can be written as y2/3.
Write Final Expression: Write the final expression.The final expression is −5xy×y2/3, which simplifies to −5xy1+2/3=−5xy5/3.
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