1) 8x^2 - 4x - ( x^2 - 9) = 8x^2 - 4x - x^2 +9 = 7x^2 - 4x + 9
2) x^2 - 8x - 33 + x^2 + 12x + 36 = 2x^2 + 4x + 3
3) 7( a^2 + 2ab + b^2) - 14ab = 7a^2 + 14ab + 7b^2 - 14ab = 7a^2 + 7b^2=
= 7( a^2 + b^2)
Нужно составить пропорцию
330 - 100%
384 - х%
х = 384 * 100 / 300 ≈ 116,4 %
<span>f(x) = x^3.
</span>
<span><span> f(1) - f(0) = 1^3 - 0^3 =1
f(2) - f(1) = 2^3 - 1^3 = 8 - 1 = 7
f(3) - f(2)</span> = 3^3 - 2^3 = 27 - 8 = 19
1 < 7</span> < 19
<span> f(1) - f(0) < f(2) - f(1) < f(3) - f(2)</span>