Add or subtract the polynomials. (7x2+x−2)−(−5x3−4) (1 point) Responses 12x3+x +2 12x3+x +2 −5x3+7x2+x −6 −5x3+7x2+x −6 5x3+7x2+x+2 5 x cubed plus 7 x squared plus x plus 2 2x2+x−6
7x^2 + x - 2 = 0
-(-5x^3 - 4) = 5x^3 + 4
Therefore, (7x^2 + x - 2) - (-5x^3 - 4) = 5x^3 + 7x^2 + x - 6.
Correct response: 5x^3 + 7x^2 + x - 6