Classify the following as a constant, linear,quadratic and cubic polynomials:
$3$
$3$ is a constant polynomial because $3=3 x^{0},$ exponent of the variable $x$ is $0 .$
Factorise the following quadratic polynomials by splitting the middle term
$x^{2}-4 x-77$
Expand
$(3 x+7)(-3 x+7)$
State whether each of the following statements is true or false
$x^{2}-8 x+12=(x-6)(x-2)$
Factorise
$25 x^{2}+25 x+6$
$16 x^{2}-16 x-21$
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