book Maths Puzzle Numerical Ability

How do you determine the domain and range of the following equation

y=|x-2|

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book Other Question

2x^2 + x -10/-12 + 8x – x^2



2x^2 + 3x -9/ divide x^2 + 10x +24/
2x^2 – 13x + 15 x^2 + x – 30



8x/4-x - 5x/x-4



Divide

4i/6 + 5i


2y√[27
using elimination to solve this system of equations, how would i solve
8x-3y=-11
2x-5y=27