Question

(2+under root 2)square 2​

Answer 1

Answer:

The square root of 2, or the th power of 2, written in mathematics as √2 or 2¹⁄², is the positive algebraic number that, when multiplied by itself, equals the number 2. Technically, it is called the principal square root of 2, to distinguish it from the negative number with the same property

Step-by-step explanation:

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Answer 2

Answer:

Answer: 6+4√2

Step-by-step explanation:

(2+√2)² [identity:(a+b)²=a²+b²+2ab]

= (2)² +(√2)² + 2(2)(√2)

= 4 + 2 + 4√2

= 6 + 4√2

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