exam Maths Puzzle Numerical Ability

how to solve radicals equations involving roots

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exam Other Question

Add or subtract as indicated. Express your results in simplest form
5a - 12/ a^2 - 8a + 15 - 3a - 2/ a^2 - 8a + 15
I think I have this correct but would like to see if I do have the correct answer.
Thank You

State the domain of the following:

a) f(x)=x+4^ (There is a suare root sing ove