Subtracting Polynomials
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Subtracting polynomials requires one extra step than just adding them. Notice how we use the distributive property to change these subtraction problems to addition problems.
Source: Khan Academy, https://www.khanacademy.org/math/algebra2/x2ec2f6f830c9fb89:poly-arithmetic/x2ec2f6f830c9fb89:poly-add-sub/v/subtracting-polynomials
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