Question

Tolong jawab dengan cara nya ya...makasih

Answer 1

X² - 4x + 4 = 0

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

x1. x2 = c/a = 4/1 = 4

x1/x2 + x2/x1

= (x1 + x2)² - 2x1.x2/ x1. x2

= 4² - 2(4)/ 4

= 16 - 8/ 4

= 8/4

= 2


= x1.x2²/x1.x2²

= 4²/4²

= 16/16

= 1

persamaan kuadrat baru :

Rumus
x² - (x1 + x2)² - (2x1.x2)/ x1. x2) + x1.x2²/x1.x2² = 0

x² - 2x + 1 = 0

jawaban. : B