Question

[Phạm Gia Bảo]

tìm X em cần gấp ạ 
9x^2-4=(2x-1)*(3x+2)

Answer 1

[Edogawa Conan]

9x² - 4 = (2x - 1)(3x + 2)

=> (3x - 2)(3x + 2) - (2x - 1)(3x + 2) = 0

=> (3x + 2)(3x - 2 - 2x + 1) = 0

=> (3x + 2)(x - 1) = 0

=> \(\orbr{\begin{cases}3x+2=0\\x-1=0\end{cases}}\)

=> \(\orbr{\begin{cases}x=-\frac{2}{3}\\x=1\end{cases}}\)