Question

$18 + 3 \sqrt{15} + \sqrt{15}$
do it fast plz ​

Answer 1

$18 + 3 \sqrt{15} + \sqrt{15} \\ = 18 + \sqrt{15} (3 + 1) \\ = 18 + 4 \sqrt{15}$

Hope It Helps. ^_^

Answer 2

Answer:

$18 + 3 \sqrt{15} + \sqrt{15} \\=> 18 + 4 \sqrt{15} \\ =>2(9 + 2 \sqrt{15} )$

hope helps u