We have the following expression: 2 (x + 4) ^ 2 = 6 Let's clear the value of x: x + 4 = +/- root (6/2) x + 4 = +/- root (3) x = +/- root (3) - 4 The solutions are: a = root (3) - 4 b = -raiz (3) - 4 Multiplying both solutions we have: a.b = (root (3) - 4) * (- root (3) - 4) a.b = -9 -4raiz (3) + 4raiz (3) + 16 a.b = -9 + 16 a.b = 7 Answer: the exact value of a ⋅ b is 7
This has to be C because you need to divide pi from r squared bc they r multiplied. Then you get a/pi = r squared. You need to find the square root of a/pi. So r equals square root a/pi.