Evaluate
$(421)^{2}$
$125746$
$158461$
$177241$
$157564$
Factorise the following quadratic polynomials by splitting the middle term
$x^{2}+14 x+33$
$205 \times 195$
Divide $p(x)=21+10 x+x^{2}$ by $g(x)=2+x$ and find the quotient and the remainder.
$(98)^{2}$
Find the value of each of the following polynomials at the indicated value of variables
$p(x)=x^{2}+5 x-24$ at $x=3$
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