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Popular >

simplify (2-sqrt(7))^2

Solution

simplify

(2 - 7)^{2}

Solution

11 - 47

+1

Decimal Notation

0.41699 \dots

Solution steps

(2 - 7)^{2}

Apply Perfect Square Formula:

(a - b)^{2} = a^{2} - 2 ab + b^{2}

(2 - 7)^{2} = 2^{2} - 2 \cdot 27 + (7)^{2}

= 2^{2} - 2 \cdot 27 + (7)^{2}

2^{2} - 2 \cdot 27 + (7)^{2} = 11 - 47

= 11 - 47

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Frequently Asked Questions (FAQ)

What is (2-sqrt(7))^2 ?
The solution to (2-sqrt(7))^2 is 11-4sqrt(7)