Question

(√5-2√3) (√5+2√3)
please tell me in notebook​

Answer 1

Answer:

sorry ya I not have time okay

Answer 2

Answer:

$( \sqrt{5} - 2 \sqrt{3} )( \sqrt{5} + 2 \sqrt{3} ) \\ = \sqrt{25} + 4 \sqrt{9} \\ = 5 + (4 \times 3) \\ = 5 + 12 \\ = 17$