x = ....? - Universityku

x = ….?

Materi : SPLDV

Pembahasaan soal :

x = 3^√x + 3^√8 = 3^√729

x = 3^√x + 3^√(2 × 2 × 2) = 3^√(9 × 9 × 9)

x = 3^√x + 2 = 9

x = 9 – 2

x = 7

x = 7^3

x = 7 × 7 × 7

x = 49 × 7

x = $boxed{green{bf{343}}}$

$boxed{ colorbox{lightblue}{ bf{ color{blue}{Answer~By~KingOfBGeometry~}}}}$

Jawaban:

$sqrt[3]{x} + sqrt[3]{8} = sqrt[3]{729}$

$sqrt[3]{x} + 2 = 9$

$sqrt[3]{x} = 9 - 2$

$sqrt[3]{x} = 7$

$( sqrt[3]{x} ) {}^{3} = 7 {}^{3}$

$x = 7 times 7 times 7$

$x = 343$