15.`"a^(2)-b^(2)-a-b`

If (15a^(2)+4b^(2))/(15a^(2)-4b^(2))=(47)/(7) then find the values of the following (i) (a)/(b) (ii) (7a-3b)/(7a+3b) (iii) (b^(2)-2a^(2))/(b^(2)+2a^(2))

Find the degrees of the following polynomials 15a^2b^2-a^5+b^4-a^4b+18

If (15a^2+4b^2)/(15a^2-4b^2) = 47/7 then find the value of the ratio : a/b

If (15a^2+4b^2)/(15a^2-4b^2) = 47/7 then find the value of the ratio : (b^2-2a^2)/(b^2+2a^2)

if (a+b):(a-b)=15:1, then the value of (a^(2)-b^(2))/(a^(2)+b^(2)) is:

Factorise : 7(a^(2)+b^(2))^(2)-15(a^(4)-b^(4))+8(a^(2)-b^(2))^(2)