Question

radical 20 minus 12 radical 5 plus radical 45​

Answer 1

Răspuns:

$\sqrt{20} - 12 \sqrt{5} + \sqrt{45} = 2 \sqrt{5} - 12 \sqrt{5} + 3 \sqrt{5} = - 10 \sqrt{5} + 3 \sqrt{5} = - 7 \sqrt{5}$