exam Maths Puzzle Numerical Ability

Given: f(x)= 7-2x and g(x)= 2x^2-1, find (f-g)(x) and (f*g)(x).


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Matt

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exam Other Question

simplify: -2y^2+y+9y^2-10y If y varies directly with x, and y=400 when x=1000, find the constant of variation k.