Question

Fatore:
a) x² − 3x + 2
(b) x² − 4x + 4

Answer 1

a) x² − 3x + 2

Δ = (-3)² - 4.1.2 = 9 -8 = 1

x = 3+/-1
        2

x1 = 2  ;  x2 = 1
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(b) x² − 4x + 4

Δ = (-4)² - 4.1.4 = 16 - 16 = 0

x = 4+/-0
        2

x1 = 2  ;  x2 = 2