Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take mock test.
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Solve the inequality x^2 + 2x − 15 > 0.
💡 Hint: Factor the quadratic expression.
Question 2
Easy
Solve the inequality x^2 − 4x + 4 ≤ 0.
💡 Hint: Check for perfect squares.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What is a quadratic inequality?
💡 Hint: Think about comparisons with quadratic expressions.
Question 2
True or False: A quadratic inequality can have no solution.
- True
- False
💡 Hint: Consider the nature of the roots.
Solve 1 more question and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A company's profit is modeled by P(x) = -2x^2 + 8x - 5. Determine when the profit is greater than zero.
💡 Hint: First find the x-intercepts by setting P(x) = 0.
Question 2
An object is projected from a height of 20 meters given by the equation h(t) = −4.9t^2 + 20t + 20. Find when the object is above 25 meters.
💡 Hint: Solve for t using the quadratic formula after rearranging the inequality.
Challenge and get performance evaluation