Faktor dari 8x^2-20x-19

Matematika

8x² - 20x - 19

a = 8
b = -20
c = -19

X1,2 = -b ± √(b² - 4ac) / 2a
X1,2 = -(-20) ± √(-20² - 4.8.(-19)) / 2.8
X1,2 = 20 ± √ (400 + 608) / 16
X1,2 = 20 ± √1008 / 16
X1,2 = (20 ± 12√7) / 16

X1 = (20 + 12√7) / 16
X1 = (5 + 3√7) / 4

X2 = (20 - 12√7) / 16
X2 = (5 - 3√7) / 4