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4 cards from this section. Quick, good the night before a test.
Solve using factorization: x² - 7x + 12 = 0
Look for two numbers that multiply to 12 and add to -7.
Solve using completing the square: x² + 4x = 0
What perfect square creates this equation?
What is the first step in factoring a quadratic equation?
Think about breaking down the equation into two simpler equations.
The discriminant is used to determine the number of roots. True or False?
Recall how Δ tells us about the roots.
Solve the quadratic equation by any method: 4x² + 12x + 9 = 0.
Notice it's a perfect square trinomial.
A ball is launched into the air; its height is modeled by h(t) = -16t² + 64t + 48. When does it hit the ground?
Focus on achieving 0 height for the quadratic.
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