Question

2x² -25x +50 =0
Resolvido por delta.

Answer 1

b^2 - 4.a.c
(-25)^2 -4.2.50
625 - 400
delta = 225
(-b +- raiz de delta)/2.a
[-(-25)+-raiz de 225]2.2
(25+-15)/4
(25+15)/4 = 40/4 =10
(25-15)/4 = 10/4 = 5/2

Answer 2

Δ = (-25)² - 4.2.50
Δ = 625 - 400
Δ = 225

x = -b+-√Δ/2.a
x' = 25 + 15/2.2
x' = 40/4
x' = 10


x'' = 25 - 15/2.2
x'' = 10/4
x'' = 5/2 ou 2,5