Question

$simplify(5 + \sqrt{5) {}^{2} }$
​

Answer 1

Answer:

$10(3 + \sqrt{5})$

Step-by-step explanation:

$(5 + \sqrt{5)^{2} }</p><p></p><p> = 5 {}^{2} + \sqrt{5 { }^{2} } + 2 \times 5 \times \sqrt{5} </p><p> </p><p>= 25 + 5 + 10 \sqrt{5 } </p><p></p><p>= 30 + 10 \sqrt{5} </p><p></p><p>= 10(3 + \sqrt{5})$