1
а)2-(-2)+7=2+2+7=11
б)√25/16+3/7=5/4+3/7=(35+12)/28=47/28=1 19/28
в)∛[(√17-9)(√17+9)]=∛(17-81)=∛-64=-4
г)(5/7)^7/9*(6/5)^16/9=(5/6*6/5)^7/9*6/5=1*6/5=6/5=1,2
д)
е)25+4=29
2
(4u-9v)/(4u-6√uv)+(4u-12√uv+9v)/(4u-6√uv)=
=(4u-9v+4u-12√uv+9v)/(4u-6√uv)=(8u-12√uv)/(4u-6√uv)=
=4√u(2√u-3√v)/2√u(2√u-3√v)=2
3
4√(x+3)-1/√(1-x)
{3+x≥0⇒x≥-3
{1-x>0⇒x<1<br>x∈[-3;1)