find the value of `(a^(2)-b^(2))`

If a=(sqrt(3)+sqrt(2))/(sqrt(3)-sqrt(2)) and b=(sqrt(3)-sqrt(2))/(sqrt(3)+sqrt(2)) , then find the value of 3(a^(2)-b^(2)) .

If a+b=7 and ab=12, find the value of (a^(2)-ab+b^(2))

If a+b=7 and ab=12, find the value of (a^(2)-ab+b^(2))

If a,b,c, and d are in H.P.then find the value of (a^(-2)-d^(2))/(b^(-2)-c^(2))

If a^(-1),b^(-1),c^(-1),d^(-1) are in A.P then find the value of (a^(-2)-d^(-2))(b^(-2)-c^(-2))^(-1)

If a=(sqrt(3)+1)/(sqrt(3)-1) and b=(sqrt(3)-1)/(sqrt(3)+1) ,find the value of a^(2)+ab-b^(2)

If a and b are the roots of the equation x^2-6x + 6=0 , find the value of 2(a^(2) + b^(2)) .

If a+b=7 and ab=12 find the value of a^(2)-ab+b^(2) .

If a+b=10 and ab=16 find the value of a^(2)-ab+b^(2) and a^(2)+ab+b^(2)

If a+b=10 and ab-=16, find the value of a^(2)-ab+b^(2) and a^(2)+ab+b^(2)