Question

${5}^{2} - 2 \sqrt{5}$
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Answer 1

Step-by-step explanation:

${5}^{2} - 2 \sqrt{5 } \\ 5 \times \sqrt{5} \times \sqrt{5} - 2 \sqrt{5} \\ \sqrt{5} (5 \sqrt{5} - 2)$

Solving the above equation giving values of

$\sqrt{5} = 2.236$

$2.236(5 \times 2.236 - 2) \\ 2.236(11.18 - 2) \\ 2.236(9.18) \\25.89$