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Find the derivative of -5x^(2)-6x+9

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I need help figuring out how to do this. Test coming up and I don't understand!!

 

asked Nov 19, 2013 in CALCULUS by harvy0496 Apprentice

1 Answer

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-5x^2-6x+9

Apply derivative with respect of x

= d/dx(-5x^2)-d/dx(6x)+d/dx(9)

Recall the formula

d/dx(x^n) = nx^n-1

d/dx(x) = 1

d/dx(constant) =0

= -5*2x-6*1+0

= -10x-6

d/dx(-5x^2-6x+9) = -10x-6

answered Nov 19, 2013 by william Mentor

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