exam Maths Puzzle Numerical Ability

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

1)f(g(4))
2)domain of f(g(x))

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exam Other Question

For a test of 8 true/false questions, Maria was curious about the following if she would answer every question by guessing. Determine
A) The probability of getting the first three Simplify by removing factors of 1.

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

This should look like a fraction.