Differentiate y = x^3 + 2x^2 + 4x + 7

To differentiate you bring the power down and multiply it by any coefficients (numbers in front of the xs) then subtract one from the power 

So x3 becomes 3x2 

2x2 becomes 2*2x2-1 = 4x

4x becomes 4*1x1-1 = 4

7 is a constant so can't be differentiated

Final answer: 3x2 + 4x + 4

Answered by Courtney S. Maths tutor

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