Question

simplify (5+2√11) (5-2√11)​

Answer 1

Answer:

2√11=6.63

5+6.63=11.63

5-6.63=-1.63

11.63×-1.63

-18.9569

l hope this helps you.

Answer 2

Answer:-✔✔↙️↙️

$(5 + 2 \sqrt{11}) \: (5 - 2 \sqrt{11} ) \\ comparing \: this \: with \: identity \\ (a + b)(a - b) = {a}^{2} - {b}^{2} \\ (5 + 2 \sqrt{11})(5 - 2 \sqrt{11}) \\ = ( {5})^{2} - (2 \sqrt{11}) {}^{2} = 25 - 44 = - 19$

HOPE IT HELPS YOU❣❣❇❇✌✌