if $$\sqrt { 11- 3\sqrt { 8}}=a+b\sqrt { 2}$$, then what is the value of (2a+3b)?

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

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

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

What is the value of a²+b²+c²-2ab-2bc+2ca?

If a ≠ b, then which of the following statement is true ?

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

If x = z = 225 and y = 226 then the value of : x³ + y³ + z³ – 3xyz is