exam Maths Puzzle Numerical Ability

I am supposed to simplify the sqrt of 3x/2. From the work I have done, I do not think it simplifies, am I doing something wrong??? Thanks for your help.

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exam Other Question

Could use any help available. Thanks
sqrt6x+1=1+6 sqrtx
Hi, I am some trouble with two problems for my homework. I hope some one can help me please .

Perform the indicated operations:
2√[48] + 7√[12] –√[27]
Ra