text: i need help understanding adding and subtracting polynomials? i need a easy way for me to under stand it if u can help and have aim im at(bigbootybonita94) thnx or email to add or subtract polynomials, combine like terms.  these like terms have the same variables raised to the same exponents (ex. x^2 and 2x^2).  if there are brackets around them, get rid of brackets first, and then you just add or subtract their coefficients (number in front of the variable ---- 2x, coefficient would be 2).  examples:  1) (2x -5z +y) - (7x + 4y - 2z) 2) (2x^3 - 4xy^2 + 5(x^2)(y^2)) + (3x^3 + 2(x^2)y – 6(x^2)(y^2))   solutions:  1) (2x -5z +y) - (7x + 4y - 2z)   = (2x -5z +y) + (-7x - 4y + 2z) --- when subtracting something, you’re adding the opposite   = 2x -5z +y -7x - 4y + 2z ----- remove brackets   = 2x – 7x + y – 4y – 5z + 2z ----- rearrange terms so easier to see which are the same   = -5x – 3y – 3z -----add/subtract coefficients of same variables raised to same exponents    2) (2x^3 - 4xy^2 + 5(x^2)(y^2)) + (3x^3 + 2x^y – 6(x^2)(y^2))   = 2x^3 - 4xy^2 + 5(x^2)(y^2) + 3x^3 + 2x^y – 6(x^2)(y^2) ----remove brackets   = 2x^3 + 3x^3 + 5(x^2)(y^2) – 6(x^2)(y^2)+ 2(x^2)y - 4xy^2 ---- rearrange terms   = 5x^3 – (x^2)(y^2) + 2(x^2)y – 4xy^2 ------- add/subtract coefficients   hope this helped :)