exam Maths Puzzle Numerical Ability

Find the value of x where 201, x, 1089 are three consecutive terms in a geometric sequence.

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exam Other Question

Express this following rational expressions in lowest terms, please:

3x^2 + 6x OVER 3x^2 + 9x

thank you. 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.