Advertisements
Advertisements
Question
Which of the following expression are polynomial? Justify your answer:
`1/(5x^-2) + 5x + 7`
Advertisements
Solution
`1/(5x^-2) + 5x + 7 = 5x^2 + 5x + 7`
Here, the power of x are 2 and 1 respectively
2 and 1 both are whole numbers.
Hence, `1/(5x^-2) + 5x + 7` is a polynomial.
APPEARS IN
RELATED QUESTIONS
Write the coefficient of x2 in the following:-
`2+x^2+x`
Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer:
3x2 - 4x +15
Which of the following expressions are polynomials in one variable and which are not? State reasons for your answer:
`y^2 +2sqrt3`
Write the coefficient of x2 in the following:-
`sqrt2x-1`
Which of the following expression are polynomial? Justify your answer:
8
Which of the following expression are polynomial? Justify your answer:
`((x - 2)(x - 4))/x`
Which of the following expression are polynomial? Justify your answer:
`1/7 a^3 - 2/sqrt(3) a^2 + 4a - 7`
Classify the following polynomial as polynomials in one variable, two variables etc.
x2 – 2xy + y2 + 1
Give an example of a polynomial, which is trinomial of degree 2.
Classify the following as linear, quadratic and cubic polynomial:
1 + x
