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$(a-2 b+7 c)^{2}$
$a^{2}+4 b^{2}+49 c^{2}-4 a b-28 b c+14 c a$
The degree of polynomial $5 x^{2}-7 x-11$ is……….
Which one of the following is a polynomial?
Factorise the following:
$9 x^{2}-12 x+3$
Factorise
$9 x^{2}+42 x+49$
$x+1$ is a factor of the polynomial
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