Respuesta :

Answer:

  x = -2  or  x = 2

Step-by-step explanation:

A graph is attached. The functions intersect where x = ±2.

Ver imagen sqdancefan

Answer:

[tex]x_{1}=2\\x_{2}=-2[/tex]

Step-by-step explanation:

The given expressions are

[tex]()=2x^{2} +1\\()=x^{2} +5[/tex]

To find [tex]()=()[/tex], we just need to replace each expression and create an equation

[tex]2x^{2} +1=x^{2} +5[/tex]

Now, let's solve for [tex]x[/tex]

[tex]2x^{2} -x^{2} =5-1\\x^{2} =4\\x=\sqrt{4}[/tex]

Rememeber that a square root always has to solutions, one positive and one negative.

Therefore, the solutions of the equation is

[tex]x_{1}=2\\x_{2}=-2[/tex]