Given that ( 1² +2²+3²+………..+10²)=385, the value of (2²+4²+6²+……20²) is equal to

Find the conjugate of (1 + i) ³ 

$$ {\sqrt{5929}}+\sqrt{8464}=(?)^{2}$$

If $$ {y={2x-1\over x+3}}$$ find x when y=1

Find the value of $$ (2 {1\over6}+1 {13\over18}-{1\over6}) × {16÷4}$$

If the sum of the squares of three consecutive natural numbers is 110, then the smallest of these natural numbers is:

Solve: 12–[26–{2+5×(6–3)}]

If $${b\over a}=0.7$$ find the value of $${a-b\over a+b}={11\over34}.$$