Решите: (√75-√12)*2√3 (2√5-√20)*√5

Question

Решите:
(√75-√12)*2√3
(2√5-√20)*√5

Answer 1

1)
(√75-√12)*2√3=(5√3-2√3)*2√3=30-12=18
2)
(2√5-√20)*√5=(2√5-2√5)*√5=0*√5=0