Question

d) a = - 1, b = - 5 e c = 6 *

e) a = 1, b = - 4 e c = 4 *
URGENTE!!!


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Answer 1

d) S={-6,1}

e) S={2}

Explicação passo-a-passo:

d) ∆= -5² - 4.-1.6

∆= 25 - -24

∆= 49

x= -(-5)+√49/2. -1

x= 5+7/-2= -6

x=-(-5)-√ 49/2. -1

x=5-7/-2= -2/-2= 1

S={-6,1}

e)∆= -4² - 4.4.1

∆= 16-16

∆= 0

x= -(-4)+√0/2.1

x= 4/2=2

x=x= -(-4)-√0/2.1

x= 4/2=2

S={2}