1.č........0,25x
2.č. x
x=0,25x+39
0,75x=39
x=39:0,75
x=52
1.č. = 13
2.č.= 52
<span>(a+1)</span>³<span>+0,008=((a+1)+0,2)((a+1)</span>²<span>-0,2(а+1)+0,2</span>²<span>)=(а+1,2)(a</span>²<span>+2а+1)-0,2а-0,16)=
(а+1,2)(a</span>²<span>+1,8а+0,84)</span>
2x²-3x=0
x(2x-3)=0
x₁=0 2x-3 =0,
x₂=1.5
F(x) = 5x + 3,5x^2 - 2x^4
F(3) = 5*3 + 3,5*9 - 2*81 = -115,5
F(-2) = -10 + 14 - 32 = -28
F(3) - F(-2) = -115,5 + 28 = -87,5
-4;-3;-2;-1;0;1;2
Ответ 7 целых чисел