exam Maths Puzzle Numerical Ability

Simplify each radical expression.
(sqrt2+ 3)^2

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exam Other Question

Graph the following equation by first solving for y.
2x-3y=12

What is the Equation after solving for y?
I do not understand how to do this problem. It is 2x+3=8. I can not find the steps any were to figure out this problem. Can you show me the steps please?