Question

x2-5x+6=0
X2-8X+12=0

Answer 1

x² - 5x + 6 = 0

Delta = b² - 4ac
Delta = (-5)² - 4(1)(6)
Delta = 25 - 24
Delta = 1

X = (-b +- raiz delta) / 2a
X = (5 +- 1) / 2
x' = (5 + 1) / 2 = 6/2 = 3
x" = (5 - 1) / 2 = 4/2 = 2

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x² - 8x + 12 = 0

Delta = b² - 4ac
Delta = (-8)² - 4(1)(12)
Delta = 64 - 48
Delta = 16

X = (-b +- raiz delta) / 2a
X = (8 +- 4) / 2
x' = (8 + 4) / 2 = 12/2 = 6
x" = (8 - 4) / 2 = 4/2 = 2

BONS ESTUDOS!