=3ab×18a^(3)×b^(3)=51a^(4)b^(4)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
0,5; 8.....................................
<span>2x(x−20)</span>²<span>−x</span>²<span>(x−20)=0
x-(x-20)*(2x-40-x)=0
x*(x-20)*(x-40)=0
x=0 x</span>₁=0<span>
x-20=0 x</span>₂=20<span>
x-40=0 x</span>₃=40<span>
</span>
Точка А не принадлежит т. К. 15=-2*10+5 15/=-15