2.√0,64x^6y^10 =0,8·IX³I·Iy^5I= - 0,8x³y^5,x≥0,y≤0
3.1)-2,4√75=-2,4√25·3 = -2,4·5√3= -12√3.
2)-100√0,08=-100√0,04·2 =-100·0,2√2= -20√2.
3)2/3√27/4 =2/3√9/4·3=2/3·3/2√3=√3.
2. 1)2√5=√4·5=√20.
2)-8√2= - √64·2= -√128.
6.a) 30/7√5=30√5/7(√5)²=30√5/35=6√5/7.
б)35/(√37+√2) =35(√37-√2) /(√37-√2)(√37+√2) =35(√37-√2)/35=√37-√2.
