Add, Subtract, and Factor Polynomials

$$9v^4+9v^2-1$$  

$$9v^4+9v^2$$  

$$9v^4+2v^2$$  

$$9v^4+3v^2$$  

$$-9n^4+8n^3+5n$$  

$$-11n^4+4n^3+10n$$  

$$-9n^4+8n^3+10n$$  

$$-9n^4+4n^3+10n$$  

$$-23v^4-17v^3+3v^2$$  

$$-23v^4-13v^3+3v^2$$  

$$-15v^4-13v^3+3v^2$$  

$$-23v^4-10v^3+3v^2$$  

$$-9x^4+4x^3+6x^2+1$$  

$$-9x^4+4x^3+2x^2+1$$  

$$-5x^4+3x^3+6x^2+1$$  

$$-9x^4+3x^3+6x^2+1$$  

$$36x^3-18x^2+26x-30$$  

$$7x^3+57x^2+13x+40$$  

$$5x^3-13x^2+13x-14$$  

$$24x^3-4x^2-66x-24$$  

$$4m^4-8m^2-16$$  

$$12m^4-48m^2+28$$  

$$12m^4+14m^3-88m^2+10m+28$$  

$$4m^4+14m^3+4m^2+66m-16$$