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Which of the following is a quadratic polynomial in one variable?
  • a)
  • b)
  • c)
  • d)
Correct answer is option 'A'. Can you explain this answer?

Class 9 Question

Preet
Jun 08, 2018
(a)x^2 is d correct answer becoz it is a quadratic polynomial in variable'x'. (b) is not the correct answer becoz it is not a polynomial becoz it's variable has not an integral power.. it is a rational no. and u know in polynomial he power of variable is always a positive integer. (c)is not the correct answer becoz the power of variable seems negative integer (d)is also an incorrect answer becoz there are two variables x & y.. so (a) is the correct answer. .

Arvi Singh Oberoi
Dec 26, 2018
Because a quadratic polynomial said that the maximum power as well as it's degree is two...mand in option number 3 we see that it's degree is 2 but after it's other degree is also 2 ...

Nandini Kandoi
Dec 26, 2018
A is the correct answer bcoz in a quadratic polynomial the highest degree is 2 and so in option A

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