6) Which of the following is a quadratic polynomial?
(A) 3x³ + 5x +4
(B) 5+ 3x + 2x² + 7x³
(C) x ² + 1/x + 3
(D) (x-1) (x + 1)
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Step-by-step explanation:
D- (x-1) (x+1) it is correct answer
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