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Expand the linear factors of f(x), where f(x) = (x - 10)(x + 2).
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Expand the linear factors of f(x), where f(x) = (x - 10)(x + 2).

User Sednus
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Multiply X in the second parentheses then multiply -10 in the second parentheses.

X^2 + 2x -10x -20 (now simplify)

X^2 -8x -20 is the answer.
User Maxmelbin
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