Question

[Killer world]

Tìm x biết: 3(2x-3)(3x+2)-2(x+4)(4x-3)+9x(4-x)=0

Giải chi tiết giúp mk vs, cảm ơn!!!!

Answer 1

[alibaba nguyễn]

\(3\left(2x-3\right)\left(3x+2\right)-2\left(x+4\right)\left(4x-3\right)+9x\left(4-x\right)=0\)

\(\Leftrightarrow x^2-5x+6=0\)

\(\Leftrightarrow\left(x^2-3x\right)+\left(-2x+6\right)=0\)

\(\Leftrightarrow\left(x-3\right)\left(x-2\right)=0\)

\(\Leftrightarrow\orbr{\begin{cases}x=3\\x=2\end{cases}}\)

Answer 2

[Nam Cung Trieu Nhan]

xin lỗi toán lớp 8 thì mk chịu