kak bantu jawab no 22.... terimakasihh

x² - 4x + 3 = 0
a = 1 , b = - 4 , c = 3

x1 + x2 = - b/a = 4/1 = 4

X1 • x2 = c/a = 3/1 = 3

x1² + x2²
= ( x1 + x2)² - 2x1x2
= ( 4)² - 2(3)
= 16 - 6
= 10 ( E )

Caranya lihat di foto ya.