Question
असमिका ${x^2} - 4x < 12\,{\rm{ }}$ का हल होगा
$\Rightarrow$ ${x^2} - 4x - 12 < 0$ $⇒ {x^2} - 6x + 2x - 12 < 0$
$\Rightarrow$ $(x - 6)(x + 2) < 0$ $⇒ - 2 < x < 6$.
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(जहाँ $S = p[{p^4} - 5{p^2}q + 5{q^2}],\,\;P = {p^2}{q^2}[{p^4} - 5{p^2}q + 4{q^2}]$