Question

12 и 13 решениеи ответ

Answer 1

13.
log4 x + log4 5 = log4 20
log4 5x = log4 20
5x = 20
x = 4
12.
∫(5x⁴ - 2x +1)dx = 5x⁵/5 - 2x²/2 = x⁵ - x²

Answer 2

Пропущено: +х + С после x².

Answer 3

12) $F(x)= frac{5x^5}{5}- frac{2x^2}{2}+x+C=x^5-x^2+x+C.$

13) log(4,x) + log(4,5) = log(4,20)
      5*x = 20
      x = 20/5 = 4.