y(21)316x2y(23)+8y2Which of the following expressions is equivalent to the given expression assuming y≥0 ?Choose 1 answer:(A) 2y32x2+y(21)(B) 324x2y(27)∗y(21)(C) y316x2+2y(67)(D)316x2y2+8y(25)
Q. y(21)316x2y(23)+8y2Which of the following expressions is equivalent to the given expression assuming y≥0 ?Choose 1 answer:(A) 2y32x2+y(21)(B) 324x2y(27)∗y(21)(C) y316x2+2y(67)(D)316x2y2+8y(25)
Factor out common term: Factor out the common term from the cubic root. We notice that both terms inside the cubic root have a common factor of 8y(23). We can factor this out to simplify the expression.
Factor expression inside root: Factor the expression inside the cubic root. 16x2y23+8y2=8y23(2x2+y21)Now we have the expression y21⋅38y23(2x2+y21).
Separate cubic root of product: Apply the property of roots to separate the cubic root of the product. 38y23(2x2+y21)=38y23×32x2+y21
Simplify cubic root: Simplify the cubic root of 8y(3/2). Since 8 is 23 and y(3/2) is the cube of y(1/2), the cubic root of 8y(3/2) is 2y(1/2).
Combine with remaining part: Combine the simplified cubic root with the remaining part of the expression.We now have y(21)×(2y(21)×32x2+y(21)).
Multiply terms: Multiply y(1)/(2) by 2y(1)/(2).Multiplying these two terms gives us 2y(1)/(2)+(1)/(2)=2y(2)/(2)=2y.
Combine with cubic root: Combine the result with the remaining cubic root.The final expression is 2y×32x2+y(21).
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