If $$y = 5{\text{,}}$$ then what is the value of $$10y\sqrt {{y^3} - {y^2}} $$ = ?
A. $$50\sqrt 2 $$
B. 100
C. $$200\sqrt 5 $$
D. 500
Answer: Option D
Solution (By Examveda Team)
$$\eqalign{ & = 10y\sqrt {{y^3} - {y^2}} \cr & = 10 \times 5\sqrt {{5^3} - {5^2}} \cr & = 50 \times \sqrt {125 - 25} \cr & = 50 \times \sqrt {100} \cr & = 50 \times 10 \cr & = 500 \cr} $$This Question Belongs to Arithmetic Ability >> Square Root And Cube Root
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