3x^2 + 4x = ?
7x^3?
no
3x^2+4x = x(3x+4)
you cannot add coefficients of unlike terms and then multiply their powers.
3x^2 + 4x^2 = 7x^2
3x^2 * 4x = 12x^3
7x^3?
3x^2+4x = x(3x+4)
you cannot add coefficients of unlike terms and then multiply their powers.
3x^2 + 4x^2 = 7x^2
3x^2 * 4x = 12x^3