could someone help me with math?

Question

Perform the following additions and/or subtractions:

(5x²+6x−6) − (4x²+2x−2) + (3x²+8x−4)

Answer 1

= (5-4+3)x^2 + (6-2+8)x -6+2-4

= 4x^2 +12x -8

just combine like terms

sum the coefficients of x^2 terms

sum the coefficients of x terms

sum the constant terms

put them all together.