Factorise
$144 x^{2}-289 y^{2}$
$(12 x+17 y)(12 x-17 y)$
The value of $249^{2}-248^{2}$ is
Expand
$(2 a+3 b)(2 a-5 b)$
If $(5 x-3)^{2}=25 x^{2}+k x+9,$ then find $k$
Find the zeroes of the polynomial:
$p(x)=(x-2)^{2}-(x+2)^{2}$
Evaluate
$103 \times 97$
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