Arre, first you must use the formula \( x = \frac{-b \pm \sqrt{b^2 - 4ac}}{2a} \) and keep your square root precise in the working. Only in the final answer, you round to two decimal places, never in between steps. This ICSE rule about rounding scared me too, until my son showed me his engineering calculator—it feels wrong to chop a melody short, but exams have their own rhythm. In my own Class 10 CBSE days, we just left it as \(\sqrt{2}\) and moved on, thikai cha.
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