Question

x= -b + √Δ /2a
adote : a= -1
b= 4
c= 0
√Δ= 1

Answer 1

Ola Lorenna

-x² + 4x = 0

a = -1
b = 4
c = 0

delta
Δ² = b² - 4ac
Δ² = 16
Δ = 4

x1 = (-4 + 4)/-2 = 0
x2 = (-4 - 4)/-2 = 4

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