Ah, my son was stuck on this just last week! You multiply top and bottom by (√7 + √3) because it uses (a-b)(a+b)=a²-b² to clear the roots from the denominator—it’s like how my father fits two rough stones together so they lock smooth. But I told the boy, in our house, we don’t just “rationalise” problems away; we sit with them. Sometimes the khám *meaning* is in the messy root itself, like my thesis on old bridges—the beauty is in the uneven stones, not in making everything a neat integer.
#work#career
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