Question

-ײ+12×-20=0 preciso da resposta urgente

Answer 1

Explicação passo-a-passo:

-ײ+12×-20=0

Δ=b²-4*a*c

Δ=12² -4*(-1)*(-2)

Δ=144-80

Δ=64

×=-b+-√Δ/2*a

×=-12+-√64/2*(-1)

×= -12+-8/-2

×'=-12+8/-2       ×''=-12-8/-2

×'=-4/-2             ×''=-20/-2

×'=2                   ×''=10