Math, asked by Anonymous, 11 months ago

find x if (27)^x = 9/x³
.

Answers

Answered by Anonymous
5
Hi ,

Here we use laws of exponents :

Given ( 27 ) ^ x = 9 / 3 ^x

⇒ ( 3 × 3 × 3 )^x = ( 3 × 3 ) / 3^x

⇒ ( 3 ³ )^x = 3² / 3^x

⇒  3 ^ 3x × 3^x = 3²            

⇒ 3^ (3x +x) = 3²               

⇒ 3^4x = 3²

⇒4x = 2                      

⇒ x = 2 / 4

  ∴ x = 1 / 2

Anonymous: Wrong
Anonymous: it is x³ not 3^x
Anonymous: umm....!
Anonymous: sorry
Answered by Anonymous
2

HEY MATE!!

3 × 3 × 3^x = 3× 3 /3^x

(3^3)^x = 3^2 / 3^x

3^3x × 3^x = 3^2

3^(3x + x) = 3^2

3^4x = 3^2

4x = 2

x =2/4

x = 1/2

HOPE IT HELPS YOU!!!


Anonymous: look the question properly
Anonymous: sure.
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