Question

Помогите срочно: решите неравенство x^2-3x-4>0

Answer 1

$x^2-3x-4 textgreater 0 left { {{x-4 textgreater 0} atop {x+1 textgreater 0} right. left { {{x-4 textless 0} atop {x+1 textless 0}} right. left { {{x textgreater 4} atop {x textgreater -1}} right. left { {{x textless 4} atop {x textless -1}} right.$

x∈(4,+∞)

x∈(-∞,-1)