Example 2: Factoring quadratics by grouping | Algebra I | Khan Academy
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Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/algebra/x2f8bb11595b61c86:quadratics-multiplying-factoring/x2f8bb11595b61c86:factor-quadratics-grouping/v/factoring-trinomials-by-grouping-4 Factor 4y^2+4y-15 as (2y-3)(2y+5) by grouping. Practice this lesson ...
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