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$(x+5 y)(x-5 y)$
One of the factors of $\left(25 x^{2}-1\right)+(1+5 x)^{2}$ is
Find the value of
$x^{3}+y^{3}-12 x y+64,$ when $x+y=-4$
If $p(x)=x^{2}-4 x+3$ then, find the value of $p(2)-p(-1)+p\left(\frac{1}{2}\right)$
If $p(x)=x^{2}-2 \sqrt{2} x+1,$ then $p(2 \sqrt{2})$ is equal to