exam Maths Puzzle Numerical Ability

Write each equation in the form y = a(x-h)2 + k:

y = 2x2 + 20x + 50

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exam Other Question

Okay, the instructions say to Solve the Radical Equation...
6-√2x=-2
I know how to solve Radical Equations, but we were not told how to do ones that had a negative sign before the √. I really appreciate your help.
To Whomever can assist, Thank you!
Could someone help me graph this inequality?

y < or equal to 1/2x - 2