Question

Answer 1

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

=>(3x-2)(4x+2)=0

=>x=2/3 hoặc x=-1/2

b: \(\Leftrightarrow\left(2x-1\right)\left(4x-5\right)-\left(4x-5\right)\left(4x+5\right)=0\)

=>(4x-5)(2x-1-4x-5)=0

=>(4x-5)(-2x-6)=0

=>x=-3 hoặc x=5/4