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Question: please explain these in detail i have tried them but...

Question details
Please explain these in detail. I have Tried them but got them wrong.

Perform the indicated operations and simplify
4x+19/6x-1 - 2x+19/6x-1
x/x^2+x-12 - 1/x+4
Simply the expression
-sqrt x^2+2/x^2 + 1/sqrt x^2+2
X(x+6)^1/2-(x+6)^1/2 / x^2
3x^2/9(x^2-1)^2/3 - (x^2-1)^1/3 all divides by x^2
-x/5(6+x^2)^3/2 + 6/(6+x^2)^1/2
Rationalize the denominator and simplify
2y/sqrt y+7
X/sqrt 6 - sqrt 7
Rationalize the numerator and simply
Sqrt x+9 -3/x (-3 is not in sqrt)

Much thanks! If any of the problems I typed don’t make sense message me and I will clear up the confusion.

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