integral akar 2 + 5x dx

misal
u = 2 + 5x
du = 5 dx
dx = du/5

Integral √2+5x dx
= Integral (u)^1/2 du/5
= 1/5 x 2/3 x u^3/2 + C
= 2/15 (2+5x)^3/2 + C
= 2/15(2+5x)(√2+5x) + C