Tolong bantuin kerjain dong kakak 2 ​

Jawab:

#dirumahsajalah

4. f(x) = (3x+ 2)(x  -5)

f'(x) =  3 (x – 5)  + 3x + 2

f' (-2) = 3 (-7 )  - 6 + 2

f'(-2) =  -25

5 . f(x)= (x² + 1/√x)²

f(x) = x⁴  +  2x²/√x +  1/x

f(x) = x⁴  +  2 x^(3/2)   +  x^-1

f '(x) = 4x³ +  3 x^(1/2) –  x^-2

f '(x) = 4x³ +  3√ x –  1/x²