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3 cards from this section. Quick, good the night before a test.
Solve x^2 + 2x - 15 > 0.
Think about factoring the expression first.
Solve x^2 - 4x + 4 ≤ 0.
Is this a perfect square?
What is the standard form of a quadratic inequality?
What signifies a comparison in inequalities?
Are quadratic inequalities applicable in real-world applications?
Think of problem-solving situations presented earlier.
Prove the inequality x^2 - 4x + 4 ≥ 0 holds for all real values of x and explain your reasoning.
Consider the nature of perfect squares and their behavior on the number line.
Curve a projectile modeled by the function h(t) = -16t^2 + 64t - 48. For how long is the object's height greater than 0?
Finding the roots will help you define the intervals where the height is above ground.
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