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x= 9 + 4 root 5, find root x – 1 / root x



PLEASE ANSWER ASAP!

By Liliana

x= 9 + 4 root 5, find root x – 1 / root x

PLEASE ANSWER ASAP!

About the author
Liliana

Calculate: E=sin(a/2-2b), if
a in (0, pi/2)
sin a=4/5
b in (pi/2, pi)
ctg b=-1/2​

QUESTION ❓

__what does fire stand for according to the poet__?!​

2 thoughts on “x= 9 + 4 root 5, find root x – 1 / root x<br /><br /><br /><br /> PLEASE ANSWER ASAP!”

  2. x=9+4√5

    √x – 1/√x = (x-1)/√x

    => ( 9+4√5 – 1) / √(9 + 4√5 )

    =>(8 + 4√5) / (4 + 5 + 4*5)

    => 4( 2 + √5) / √(22 + √52 + 2*2*√5)

    =>4 ( 2 + √5) / √ (2 + √5)2

    =>4(2+√5) / (2+ √5)

    => 4 (Ans)

    Reply

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