Question

Efectuati;
a) √144(√12+2√72-6√18)
b) √242(√28-√7-2√7)
c)  (√0,01-√0,0016)·100

Answer 1

a) √144=√12²=12
√12=2√3
2√72=6√2
6√18=18√2
=12(2√3+6√2-6√2)=12·2√3=24√3
B)
√242=11√2
√28=2√7
=11√2(2√7-√7-2√7)=11√2·(-√7)=-11√14
C)
√0,01=√1/100=1/10
√0,0016=√16/√10000=4/100 SIMPLIF=2/50=1/25
=(1/10-1/25)·100=(10-4)/100·100=6