exam Maths Puzzle Numerical Ability

Simplify by removing factors of 1.

m^2-4 / (m+2)^2

This should look like a fraction.

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exam Other Question

Given: F(x)=x^2-4 g(x)=sqrt 2x+4

1)f(g(4))
2)domain of f(g(x)) Hi, I need help solving this problem on reducing rational expressions:

x^2-2xy+y^2/x^2-y^2

Thanks!