Respuesta :

Answer: x=-squareroot5

Step-by-step explanation:

The value of x is equal to √7.

What is an expression?

Expression in maths is defined as the collection of the numbers variables and functions by using signs like addition, subtraction, multiplication and division.

The value of x is calculated as,

(x² −7) ² +2x ² −14 = 0

(x² −7) ² + 2 ( x² - 7) = 0

(x² −7) 3 = 0

(x² −7) =  0

x² = 7

x = √7

Therefore, the value of x is equal to √7.

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