Question

{ x² - [ 6² - ( 8² - 9.7 )³ - 7.5 ]³ - 5.3 }³ = 1

giúp vs ạ

Answer 1

<=> [x²-(36-1-35)³-15]³=1

<=> (x²-15)³=1

<=> x²-15=1

<=> x²=16

<=>\(\orbr{\begin{cases}x=4\\x=-4\end{cases}}\)