Question

f(x)=x2-10×+25 conta

Answer 1

f(x) = x² - 10x + 25 = 0

a = 1
b = - 10
c = 25

delta = b² - 4ac
delta = (-10)² - 4 . 1 . 25
delta = 100 - 100
delta = 0

x = - b +- raiz de 0 / 2a
x = - ( -10) +- 0 / 2.1
x = 10 +- 0 / 2

x' = 10 + 0 /2
x' = 10/2
x' = 5

x'' = 10 - 0 /2
x'' = 10 /2
x'' = 5

s = { 5 , 5 }