So I keep attempting this problem and using the rules of derivatives I should get -10x+1 but I'm not getting that using the definition and limit rule. Please help! What am I doing wrong?

- 10x +1 1. Use the definition of a derivative (limits) to find the derivative of g(x )=-5x2+x. 9' ( x ) = lim F CX+ AX) - f ( K ) > (xth ) (xth ) 4X-20 ( x.+ AK) (* +Ax) - lim - S ( X+4X ) + (x+ 4X)- Esx" + x] x2 + XAX + XAX + AX AX-20 AX = lim - 5 ( x2 + 2 x (X) + DX- ) + x tox + 5x2 - x AX - 70 AX = lim - 5X2- 10 *(Ak)-SAX4 7/+ +8x2 -X AX - DO OK - lim (-10X-50X) AX - 20 = -5 ( 10x + 1AX)