Question

Equação de 2 grau me ajudaaaaaa

Answer 1

Ola Boa Noite!

A) x1 + x2 = - b/a

x1 + x2 = - (- 3)/1

x1 + x2 = 3

B) x1 • x2 = c/a

x1 • x2 = -10/1

x1 • x2 = - 10

C) 1/x1 + 1/x2 = (x1 + x2)/x1 • x2

= - 3/10

D) (x1)² + (x2)² = (x1 + x2)² - 2(x1)(x2)

= (3)² - 2(- 10)

= 9 + 20

= 29