=>x2-7x+12=196
=>x2-7x-184=0
=>\(x\in\left\{\dfrac{7+\sqrt{785}}{2};\dfrac{7-\sqrt{785}}{2}\right\}\)
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=>x2-7x+12=196
=>x2-7x-184=0
=>\(x\in\left\{\dfrac{7+\sqrt{785}}{2};\dfrac{7-\sqrt{785}}{2}\right\}\)