(2+m)^2×(2-m)^2

(a-x)^2×(x+a)^2

решите плеееззз

(2+m)^2×(2-m)^2=((2+m)*(2-m))^2=(4-m^2)^2=16-8m^2+m^4=m^4-8m^2+16(a-x)^2×(x+a)^2=((a-x)*(x+a))^2=((a-x)*(a+x))^2=(a^2-x^2)^2=a^4-2a^2x^2+x^4