erick392k erick392k

11-07-2020
Mathematics

contestada

what is x2 + 2x + 9 = 0

Respuesta :

bekkarmahdi702 bekkarmahdi702

11-07-2020

Answer:

x has no real solution

Step-by-step explanation:

Our equation is qudratic equation so the method we will follow to solve it is using the dicriminant :

Let Δ be the dicriminant
a=1
b=2
c=9
Δ= 2²-4*1*9 =4-36=-32
we notice that Δ≤0⇒x has no real solution

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