Practice Quadratic Expressions (1.1) - Quadratic Inequalities - IB 10 Mathematics

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9 questions

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6 sample questions

Question 1.
Write down a quadratic expression.
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Make sure a is not zero.
Question 2.
Identify a quadratic inequality.
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Look for expressions with x².
3Question 3.
Which of the following represents a quadratic inequality?
- x² + 2x + 1 = 0
- x² + 3x < 5
- 2x + 3 = 7
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Look for the < or > symbol.
4Question 4.
True or False: A quadratic function can have exactly one real root.
- True
- False
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Think about the situation when the discriminant is zero.
Question 5.
Solve the quadratic inequality 5x² - 20x + 15 > 0 and discuss the significance of the solution in a real-world context.
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Try factoring first to find the roots.
Question 6.
Given the inequality -2x² + 4x - 2 ≤ 0, analyze the implications of the solution in a business scenario.
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Consider the standard form and where the values meet the condition.

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