exam Maths Puzzle Numerical Ability

(X+Y)3rd power=(X+Y)(X+Y)(X+Y)
=(X+Y) (X 2nd power +2XY +Y 2nd power)

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exam Other Question

x/x+8-8/x-8=x^2+64/x^2-64 1)Graph the function g(x)= (x-1)3

2)f(x)= x2-2 my answer is f(x)=2x-8 /f(3)=2(3)-8 / 3=8-8/ 3=0

3)Draw the graph of the following linear function and give the domain and ra