How to solve for x in <mrow class="MJX-TeXAtom-ORD"> <msqrt> 9 +

Jeramiah Campos

Jeramiah Campos

Answered question

2022-06-24

How to solve for x in 9 + 2 x 2 x = 5 9 + 2 x ?

Answer & Explanation

Jaylee Dodson

Jaylee Dodson

Beginner2022-06-25Added 22 answers

HINT:
Clearly 9 + 2 x 0
9 + 2 x 2 x ( 9 + 2 x ) = 5 2 x ( 9 + 2 x ) = 9 + 2 x 5
Squaring we get 2 x ( 9 + 2 x ) = ( 4 + 2 x ) 2
Can you proceed from here?
Test for the validity of the root
( 9 + 2 x + 2 x ) ( 9 + 2 x 2 x ) = 9
9 + 2 x 2 x = 5 9 + 2 x
9 + 2 x + 2 x = 9 9 + 2 x 5
2 x = 4 5 9 + 2 x

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