Respuesta :
Answer:
2.828 (the square root of 8)
Step-by-step explanation:
2.828 squared is 8, which is also the square root of 64
The value in the missing is x = 2√2 or x = -2√2 or x = ±√8 if the expression is _² = √64.
What is an expression?
It is defined as the combination of constants and variables with mathematical operators.
We have a mathematical expression:
_² = √64
Let the missing number be x:
Then, the equation becomes:
x² = √64
√64 = √(8x8) = 8
x² = 8
The above equation represents a quadratic equation, Any equation of the form [tex]\rm ax^2+bx+c=0[/tex] where x is variable and a, b, and c are any real numbers where a ≠ 0 is called a quadratic equation.
As we know, the formula for the roots of the quadratic equation is given by:
[tex]\rm x = \dfrac{-b \pm\sqrt{b^2-4ac}}{2a}[/tex]
x = ±√8
x = ±2√2
Thus, the value in the missing is x = 2√2 or x = -2√2 or x = ±√8 if the expression is _² = √64.
Learn more about the expression here:
brainly.com/question/14083225
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