Решите плиз (6x^2+18x^4)/(12x^3) (25y^(2)-4)/(25y+10) (9-a^(2))/a^(2)+6a+9

Question

Решите плиз

(6x^2+18x^4)/(12x^3)

(25y^(2)-4)/(25y+10)
(9-a^(2))/a^(2)+6a+9

Answer 1

(6x^2+18x^4)/(12x^3)=(6x^2(1+3x^2))/ (12x^3)=( 1+3x^2) /2x

(25y^(2)-4)/(25y+10)=((5y-2)(5y+2))/(5(5y+2)) =(5y-2)/2

(9-a^(2))/a^(2)+6a+9=((3-a)(3+a)) / ((3+a)(3+a)) =(3-a)/(3+a)