Differentiate 3x^(3) + 7x^(2) -4x

Using the formula for differentiation: if y=ax^N then dy/dx= Na*x^N-1 apply this to each term in the equation given; first term: dy/dx= 9x²second term: dy/dx= 14xthird term: dy/dx= - 4Combining all three this gives: dy/dx= 9x² + 14x - 4