Q. 1 B3.7( 3 Votes )

# Which of the following is a quadratic polynomial?(i) 2 x2+1 (ii) x2 + (iii) (iv)

(i) On solving the equations,

2x2 + 1 = 0

Re-writing in the format of ax2 + bx + c = 0

(2)x2 + (0)x + 1 = 0

a = 2 b = 0 & c = 1.

So, following the ideal pattern of a quadratic polynomial 2x2 + 1 is a quadratic polynomial.

(ii) On solving the equations,

it can’t be re-written in the format of ax2 + bx + c = 0

So, following the ideal pattern of a quadratic polynomial, x2+ is not a quadratic polynomial.

(iii) On solving the equations,

it can’t be re-written in the format of ax2 + bx + c = 0

So, following the ideal pattern of a quadratic polynomial, is not a quadratic polynomial.

(iv) On solving the equations,

3√(x2+ 1) + x = 0

it can’t be re-written in the format of ax2 + bx + c = 0

So, following the ideal pattern of a quadratic polynomial, 3√(x2+ 1) + x = 0 is not a quadratic polynomial.

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