Polynomial Questions Page-3

17) (a + b)(a - b) =
(A) a(a - b) - b(a - b)
(B) a(b - a) + b(a - b)
(C) a(a + b) - b(b + a)
(D) a(a - b) + b(b - a)

18) The sum of the polynomials, 6x2 + 9x - 8 and 2x2 - 5x + 3 is:
(A) 4x2 - 14 x - 5
(B) 8x2 + 14 x + 11
(C) 8x2 - 4 x + 5
(D) 8x2 + 4 x - 5

19) (6x2 + 9x - 8) - (4x2 - 5x + 3) = ?
(A) 2x2 - 14x - 11
(B) 2x2 + 14x - 11
(C) 10x2 + 4x - 11
(D) 10x2 - 14x - 11

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