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2 cards from this section. Quick, good the night before a test.
Solve by factoring: x² - 6x + 8 = 0.
Factor to (x - 2)(x - 4) = 0.
Find the x-intercepts of x² + 5x + 6 = 0.
Factor the expression.
What is an x-intercept?
Think about when the function is zero.
Which method would you use when a quadratic cannot be factored easily?
Consider methods that apply to all cases.
Consider the quadratic function f(x) = x² + 12x + 36. Find the x-intercepts and discuss their nature.
What does it mean when the roots are equal?
If the quadratic equation is 4x² + 8x + 5 = 0, what are the roots? Are they real or complex?
Calculate b² - 4ac and check its sign.
4 more questions in this section. Enroll free to practise them all.
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