Question

Resolva as equações:

a) log ³√x-3 (x+3) = 6

Ajudem, pelo amor de Deus!!!​

Answer 1

log ³√x-3 (x+3) = 6

(³√x-3)^6 = (x+3)

(x-3)^6/3 = x+3

(x-3)² = x+3

x²-6x+9 -x -3 = 0

x² -7x +6 = 0

∆= (-7)² -4.1.6 = 49 -24 = 25 ==> √∆=5

x = -b+√∆/2a = 7+5/2.1 = 12/2 = 6 ✓