Question

Resolver: 3(x2 + 1) = 10x

Answer 1

3(x^2 + 1) = 10x

3x^2 + 3 = 10x

3x^2 - 10x + 3 = 0

Factorizamos !

(3x - 1)(x-3)

Entonces :

"x" toma 2 valores!

1°

3x - 1 = 0

3x = 1

x = 1/3

2°

x - 3 = 0

x = 3

Atte : Natureza