X=2/3, так и живём, пойми
2x-3x+1=4+2x-2 (С буквой влево,числа вправо,как нас учили).
2x-3x-2x=4-2-1
-3x=1
x=- 1/3
3;5;7;... S₈ - ?
а₁ = 3, d = 2.
S₈= (a₁ + a₈)*8/2
a₈ = a₁ + 7d = 3 +7*2= 17
S₈ = (3 +17)*8/2 = 20*4 = 80
4<span>√3x-<span>√4*3x-<span>√25*3x= 4<span>√3x-2<span>√3x-10<span>√3x=-8<span>√3x</span></span></span></span></span></span></span>
<span><span><span><span><span><span><span>3<span>√4*3+2<span>√3-2<span>√9*3=3*2<span>√3+2<span>√3-2*3<span>√3=6<span>√2+2<span>√3-6<span>√3=2<span>√3</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>(<span>√4*2-<span>√4*6)*<span>√2=(2<span>√2-2<span>√6)*<span>√2=2*2-2<span>√6*2=4-2<span>√12=4-4<span>√3</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>√18*3-<span>√8*3+<span>√50*3=<span>√9*2*3-4<span>√3+<span>√25*2*3=3<span>√6-4<span>√3+5<span>√6=8<span>√6-4<span>√3</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
<span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span><span>√16*3-2<span>√3(2-5<span>√3*4)=4<span>√3-2<span>√3(2-10<span>√3)=4<span>√3-4<span>√3+20*3=60</span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span></span>
Думаю, что 1/60
Хотя может не совсем точно