Question

X(al cuadrado)+3x-1=0
Me ayudarían a resolverla

Answer 1

x² + 3 x - 1 = 0     tenemos que usar la fórmula   a = 1 ; b = 3 ; c = -1

x = - (3) +- √ 3² - 4 ( 1 ) ( - 1 ) / 2 ( 1 )
x = - 3 +- √ 9 - 4 / 2 = - 3 +- √ 5 / 2 = - 3 +- 2.236/2

Soluciones
x₁ = - 3 + 2.236 / 2
x₁ = - 0.764/2
x₁ = - 0.382

x₂ = - 3 - 2.236/2
x₂ = - 5.236/2
x₂ = - 2.618