• # question_answer PQ is a chord of a circle .the tangent XR at X on the circle cuts PQ produced at R. If$\text{XR}=\text{12 cm}$,$\text{PQ }=x$ cm, $\text{QR}=(x-2)\text{cm}$, find$x$in cm. A)  6                                             B)  7 C)  10                          D)         14

$\Rightarrow$ $p(-1)={{(-1)}^{2}}+3(-1)-2=(-4)$ $p(-1)=-4$ $'x'$ $1441\times x=5040\times 12$ Hence, the value of $\Rightarrow$ (in cms) = 10 cm.