Question

]розвяжить неравенство (2χ+3)(χ-4)∠ x^{2} +4x-12[/tex]

Answer 1

2x²-8x+3x-12-x²-4x+12<0
x²-9x<0
x(x-9)<0
x=0 x=9
x∈(0;9)