Hi, I'm not sure if I'm doing the right way. Here is the problems

1. sqrt (6x+5) (Get the derivative using this formulate f(x) = ((x+h) - x)/h ) lim h-> 0 so this is my attemp.

[ sqrt(6(x+h)+5) - sqrt(6x+5) ] / h

then I rationalize the numerator

(6x+6h+5 - 6x-5 ) / h(sqrt(6x+6h+5)(sqrt(6x+5)

then I simplify the numberator

6h / h(sqrt(6x+6h+5)(sqrt(6x+5)

can you tell me what i am doing the right way or show me how to do it.

2. the second is the product rule of derivative (sqrt(x) + 3x)(5x^2 - 3/x)

apply the rule,

(1/2 x^-1/2 + 3)(5x^2 - 3/x) + (sqrt(x) + 3x)(10x + 3/x^2)

then i put down the negative power to denominator

(1/(2 sqrt(x)) + 3)(5x^2 - 3/x) + (sqrt(x) + 3x)(10x + 3/x^2)

then what should i do next? or show me the next step.

thanks