Question

qual e a soluçao de x2-29x+100=0

Answer 1

x² - 29x + 100 = 0

Δ = b² - 4.a.c 
Δ = -29² - 4 . 1 . 100 
Δ = 841 - 4. 1 . 100 
Δ = 441

Há 2 raízes reais.

x = (-b +- √Δ)/2a

x' = (--29 + √441)/2.1   
x'' = (--29 - √441)/2.1

x' = 50 / 2   
x'' = 8 / 2

x' = 25   
x'' = 4

S = {4, 25}