= √ 32 * √ 2 - √ 32 * √ 5 - 4 √ 10 = √ 64 - √ 160 - 4√ 10 = 8 - 4√ 10 - 4 √ 10 =
= 8 - 8 √ 10
4(2a-10)/(2a-10)*(2a+10)=4/(2a+10)=4/2*(a+5)=2/(a+5).
X^2-36=0
(x-6)(x+6)=0
x1=6
x2=-6
6>-6
Ответ: 6
(8у-1)^2-49у^2=0
64у^2-16у+1-49у^2=0
15у^2-16у+1=0
D=16^2-4*15*1=256-60=196
y1=-(-16)+14/2*15=1
y2=16-14/30=1/15