Q4Multiple choiceExercise 2.1
–4 2 –2
- (A)
- (B)
- (C)
- (D)3 3 3 3 2. A quadratic polynomial, whose zeroes are –3 and 4, is (A) x2 – x + 12 (B) x2 + x + 12 x2 x (C) – –6 (D) 2x2 + 2x –24 2 2 3. If the zeroes of the quadratic polynomial x2 + (a + 1) x + b are 2 and –3, then (A) a = –7, b = –1 (B) a = 5, b = –1 (C) a = 2, b = – 6 (D) a = 0, b = – 6 4. The number of polynomials having zeroes as –2 and 5 is (A) 1 (B) 2 (C) 3 (D) more than 3
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(D) 3 3 3 3 2. A quadratic polynomial, whose zeroes are –3 and 4, is (A) x2 – x + 12 (B) x2 + x + 12 x2 x (C) – –6 (D) 2x2 + 2x –24 2 2 3. If the zeroes of the quadratic polynomial x2 + (a + 1) x + b are 2 and –3, then (A) a = –7, b = –1 (B) a = 5, b = –1 (C) a = 2, b = – 6 (D) a = 0, b = – 6 4. The number of polynomials having zeroes as –2 and 5 is (A) 1 (B) 2 (C) 3 (D) more than 3