Question

решите неравенства 6х*-7х+2>0 5х - 6<х+2

Answer 1

$6x^2-7x+2>0\6x^2-7x+2=0\D=49-4cdot6cdot2=49-48=1\x_{1,2}=frac{7pm1}{12}\x_1=frac12,;x_2=frac23\6(x-frac12)(x-frac23)>0\xin(-infty;;frac12)cup(frac23;;+infty)\\5x-6<x+2\5x-x<2+6\4x<8\x<4\xin(-infty;;4)$