bantu jawab dong....,..............................

x²-6x-2=0
x1+x2 = -b/a = 6
x1.x2 = c/a = -2

x1²+x2² = (x1+x2)² - 2(x1.x2)
= (6)² - 2(-2)
= 36+4
= 40

Maaf kalo salah :)