Question

ради Бога, помогите ​

Answer 1

$\frac{1}{2} \sqrt{256}= \frac{1}{2}*16=8$

$0,1\sqrt{400} =0,1*20=2$

$-5\sqrt{2,43} =-5*0,9\sqrt{3} =-4,5\sqrt{3}$

$\frac{4}{7} \sqrt{245} =\frac{4}{7} *7\sqrt{5} =4\sqrt{5}$