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2 cards from this section. Quick, good the night before a test.
Factor x² - 9.
Look for a difference of squares.
Factor x² + 2x.
Find the greatest common factor first.
What is the first step in factorization by grouping?
Consider the structure of the expression.
True or False: Factorization by grouping is useful for expressions with only two terms.
Remember the types of expressions suitable for this method.
Factor the expression 2x³ - 8x + x² - 4 using grouping.
Group carefully and look for common factors.
Factor x^4 - 2x^3 + x^2 + 2x by grouping.
Be mindful of the common terms!
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