Question

resolva essa conta 4x²+20x+24=0

Answer 1

4x² + 20x + 24 = 0 : 4
x² + 5x + 6 = 0

∆ = 1

x' = - 2

x" = - 3

S = {-2, -3}

Answer 2

4x2 + 20x + 24 = 0 ( dividir por 4 )
x2 + 5x + 6 = 0
∆ = ( 5 ) 2 - 4• 1 • 6
∆ = 25 - 24
∆ = 1


X1 = ( - 5 + 1 ) / 2
X1 = - 4 / 2
X1= - 2

X2 = ( - 5 - 1 ) / 2
X2 = - 6 / 2
X2 = - 3