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Quantitative Aptitude

QUADRATIC EQUATIONS MCQs

Quadratic Equations, 10th And 12th Grade Quadratic Equations

Total Questions : 102 | Page 11 of 11 pages
Question 101. I. a2 + 8a + 16 = 0, II. b2 - 4b + 3 = 0 to solve both the equations to find the values of a and b?
  1.    If a < b
  2.    If a ≤ b
  3.    If the relationship between a and b cannot be established
  4.    If a > b
  5.    If a ≥ b
 Discuss Question
Answer: Option A. -> If a < b


I. (a + 4)2 = 0 => a = -4
II.(b - 3)(b - 1) = 0
=> b = 1, 3 => a < b


Question 102. I. x2 + 5x + 6 = 0, II. y2 + 9y +14 = 0 to solve both the equations to find the values of x and y?
  1.    If x < y
  2.    If x > y
  3.    If x ≤ y
  4.    If x ≥ y
  5.    If x = y or the relationship between x and y cannot be established.
 Discuss Question
Answer: Option E. -> If x = y or the relationship between x and y cannot be established.


I. x2 + 3x + 2x + 6 = 0
=> (x + 3)(x + 2) = 0 => x = -3 or -2
II. y2 + 7y + 2y + 14 = 0
=> (y + 7)(y + 2) = 0 => y = -7 or -2
No relationship can be established between x and y.


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