Differentiate the following equation, y = x^9 + 3x^2 + x^(-1)

dy/dx = 9x8 + 6x - x-2

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Solve for simultaneous equations x +5y =9 and 3x + 2y =5.


a) Find the equation of the line that passes through (2,10) and (4,16) b) Find the point where the line in (a) intersects the line y=5x-2


Solve (x+10)(x-16)=0


2x + y = 18; x−y=6


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