Adding rational expression: unlike denominators | High School Math | Khan Academy
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Adding rational expression: unlike denominators | High School Math | Khan Academy
Courses on Khan Academy are always 100% free. Start practicing—and saving your progress—now: https://www.khanacademy.org/math/precalculus/x9e81a4f98389efdf:rational-functions/x9e81a4f98389efdf:adding-and-subtracting-rational-expressions/v/adding-rational-expression-w-unlike-denominators Sal rewrites (5x)/(2x-3)+(-4x²)(3x+1) as (-8x³+27x² ...
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