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Black Book Advanced Problems in MathematicsMathematicsQuadratic Equation

If a, b are two numbers such that a^2 + b^2 = 7 and a^3 + b^3 = 10 , then :

Options

  1. AThe greatest value of |a + b| = 5
  2. BThe greatest value of (a + b) is 4
  3. CThe least value of (a + b) is 1
  4. DThe least value of |a + b| is 1 .

Correct answer

A. The greatest value of |a + b| = 5

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