Please simplify n-2/n^2-4

Given abcd ac=38 and ae=3x+4 find the value of x

Math question.. plz me .. best answer all

Alina fully simplifies this polynomial and then writes it in standard form. xy2 – 2x2y + 3y3 – 6x2y + 4xy2 if alina wrote the last term as 3y3, which must be the first term of her polynomial in standard form? xy2 5xy2 –8x2y –2x2y