Question

PQ rotunda (X + 2) square minus x square

Answer 1

Answer:

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$pq = (x + 2) {}^{2} - {x}^{2} \\ pq = {x}^{2} + 4x + 4 - {x}^{2} \\ pq \: = 4x - 4 \\ pq = 4(x + 1)$

Hope that helps