arthur-fox_60acf53cabab1
arthur-fox_60acf53cabab1
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(x+2).(x-6)=0 x²-6x+2x-12=0 x²-4x-12=0 a= 1 b= -4 c= -12 Delta= b²-4.a.c Delta= (-4)² -4.1.(-12) Delta= 16 + 48 Delta = 64 Aplicamos a fórmula de baskhara: x= -b+-Raiz de Delta/2 x= +4 +-8/2 x'=+4+8/2=6 x''=+4-8/2=-2 Os dois …