(x^2y-3y^2+5xy^2)-(-x^2y+3xy^2-3y^2)

Which of the following is equivalent to the expression above?

simplify the expression

(x+y-z) (x-y+z) -(x+y+z)(x-y-z)

(2+1)(2^2+1)(2^4+1)\dots(2^{2n}+1)+1

Simplify the expression

(\dfrac{x^2-4x+4}{x^2-1} -\dfrac{x}{x-1} ) \cdotp \dfrac{x-1}{x-2}

Simplify the expression

(\dfrac{1}{a-b} -\dfrac{b}{a^2-b^2} )÷\dfrac{a}{a+b}

Simplify the expression

(1+\dfrac{x^2-1}{x^2-2x+1} )÷\dfrac{1}{x-1}

Simplify the expression

\dfrac{x}{x-1} -\dfrac{3}{(x-1)(x+2)} -1

Simplify the expression (x-\dfrac{2x}{x-1})÷\dfrac{x^2-2x+1}{x^2-1}

Simply \dfrac{12}{m^2-9}+\dfrac{2}{m+3} , the result is