Solve the simultaneous equations xy=2 and y=3x+5.

x=1/3 and y=6 or x=-2 and y=-1

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What is differentiation used for?


Given f(x)= 8 − x^2, solve f(3x) = -28


Lengths of two sides of the triangle and the angle between them are known. Find the length of the third side and the area of the triangle.


Solve these simultaneous equations: 3xy = 1, and y = 12x + 3


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