Question

ПОМОГИТЕ ДАМ 50БАЛОООВ!
1) √6×√24=
2) √45×√500=
3) √256×0,36
4) √450×800
5) √21²-7²=

Answer 1

Ответ:

1) √6×√24= $\sqrt{6*24}$ = $\sqrt{6*6*4}$ = 6*2 = 12

2) √45×√500= 10$\sqrt{45*5}$ = 10$\sqrt{5*5*9}$ = 10*5*3=150

3) $\sqrt{256}$×0,36 = 16*0,36= 5,76

4) √450×800= $\sqrt{9*25*2}$ * 800 = 3*5*$\sqrt{2}$ *800= 12000$\sqrt{2}$

5) $\sqrt{21^{2} }$ - $7^{2}$ = 21-49 = -28