if a=26 and b=22, then the value of   $${{a^3-b^3}\over {a^2-b^2}}-{3ab\over a+b}$$ is

If 4x² + y² = 40 and xy = 6, then find the value of 2x + y.

If x²+4y²=17 and xy=2, where x>0,y>0, then what is the value of x³+8y³?

If $$ {x+{1\over x}=7}$$ then $$ {x^{2}+{1\over {x^{2}}}=?}$$

If $$ {a={1+x\over 2-x}}$$, then find the value $$ {1\over {a+1}}+{2a+1\over{a^{2}-1}}$$ ?

 If 3x²-5x+1=0, then the value of ( $$x^2+{1\over 9x^2}$$) is 

If (x + 6y) = 8, and xy = 2, where x > O, what is the value of (x³+216y³)?

Directions: In each of these questions, two equations (i) and (ii) are given, you have to solve both the equations and give answer accordingly.

(i) 12x² + 11x + 2 = 0
(ii) 12y²+ 7y + 1 = 0