Question

How do you find the derivative of `y=(3x-4)(5x+1)`?

Answer 1

`d/dx{(3x-4)(5x+1)}=30x-17`

Explanation:

`d/dx{(3x-4)(5x+1)}`

= `(3x-4)d/dx(5x+1)+(5x+1)d/dx(3x-4)`

= `(3x-4)*5+(5x+1)*3`

= `15x-20+15x+3`

= `30x-17`