find x if (27)^x = 9/x³
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Answered by
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
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
Answered by
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!!!
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