1. ∫(2x + 5) dx ??? 2. Integral (x+3)(x-3) dx??? 3. Integral √x / 2x dx???

1•
Int (2x + 5) dx = x² + 5x + C

2•
Int (x + 3)(x - 3) dx
= Int (x² - 9) dx
= (1/3)x³ - 9x + C

3•
Int √x /(2x) dx
= (1/2) Int x^-1/2 dx
= x^1/2 + C
= √x + C