State which of the following statements are true and which are false? Give reasons for your choice.
(i) The degree of the polynomial
is ![]()
(ii) The coefficient of x2 in the polynomial p(x) = 3x3 – 4x2 + 5x + 7 is 2.
(iii) The degree of a constant term is zero.
(iv)
is a quadratic polynomial.
(v) The degree of a polynomial is one more than the number of terms in it.
(i) False
Since, Degree of a polynomial is the highest power of x in the polynomial which is 2 in
.
(ii) False
A coefficient is a multiplicative factor in some term of a polynomial. It is the constant written before the variable.
∴ The coefficient of x2 is -4.
(iii) True
Since, the power of x of a constant term is 0.
∴ the degree of a constant term is 0.
(iv) False
For an expression to be a polynomial term, any variables in the expression must have whole-number powers (i.e., x0, x1, x2,……)
Since, the power in the expression
has powers -2 and -1 which are not whole numbers, therefore,
is not a polynomial.
(v) False
Degree of a polynomial is the highest power of x in the polynomial. The degree of polynomial is not related to the number of terms in the polynomial.
Therefore, the statement is false.
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