Question

${x}^{2} + 8x + 12 = 0$

Answer 1

Observe:

a= 1
b = 8
c = 12

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∆= b²-4ac
∆= 64 - 48
∆= 16

x' = -8+4/2 = -2

x" = -8-4/2 = -6

S = { -2,-6}