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Algebra Level 2

Find the difference between x and y , if x=Root of y/16 and x= 4

252 16 256 4

2 solutions

The Adammz
Jul 17, 2015

$x=\sqrt { \frac { y }{ 16 } }$

$4=\sqrt { \frac { y }{ 16 } }$

$16=\frac { y }{ 16 }$

$256=y$

$y-x=256-4=252$

As per the statement of the question, the difference is to be taken between x and y i.e. x-y=? Nowhere is it mentioned to calculate (y-x) or to calculate the absolute value of (x-y).

Devendra Kumar Singh - 5 years, 8 months ago

How do we be confirm that root means square root?

A Former Brilliant Member - 2 years, 9 months ago

Mohd Naim Mohd Amin
Apr 15, 2015

Hello,

As it is stated that ,

x = ( y / 16 ) ^ (0.5), as x = 4 ,

By squaring both sides,

you will get y = 16( 4 ^2) = 256 ,

as the , difference = y - x = ?

Thanks....

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