У меня так получилось!!!!!!!!!!!!
6✓2+5✓18=6√2+5*3√2=21√2
5✓75-2✓27=5*5√3-2*3√3=25√3-6√3=19√3
✓2+✓50-✓18=√2+5√2-3√2√=3√2
3✓20+5✓45-2✓80=3*4√5+5*3√5-2*4√5=12√5+15√5-8√5=19√5
2✓48+✓27+✓12=2*4√3+3√3+2√3=8√3+3√3+2√3=13√3
<span>(✓3-1)(✓3+1)=</span>√3²-1²=3-1=2
<span>(1+5у)(5у-1)=10у-1
5y-1+25y^2-5y-10y+1=0
25y^2-10y=0
D=100
y1=10+10/50=0.4
y2=10-10/50=0
</span>
<span>3x5!-15x4!=
=3x*5*4!-15x*4!=
=(3*5-15)x*4!=
=(15-15)x*4!=
=0x*4!=
0</span>