Classify the following as linear, quadratic or cubic polynomial
$8 x^{3}-343$
As the degree of polynomial $8 x^{3}-343$ is $3,$ it is a cubic polynomial.
Factorise $10 x^{2}-x-24$ by splitting the middle term.
Which of the following expressions is a polynomial, state the reason ? If an expression is polynomial, state whether it is a polynomial in one variable or not
$x^{2}+y^{2}+z^{2}+2 x y+2 y z+2 z x$
Expand
$(5 x-7 y-z)^{2}$
Write whether the statement are True or False. Justify your answer.
The degree of the sum of two polynomials each of degree $5$ is always $5 .$
Factorise the following quadratic polynomials by splitting the middle term
$x^{2}-12 x+20$
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