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Answer:
f(x) - g(x) = x² + 2x - 63
Explanation:
f(x) = x² + 3x - 70
g(x) = x - 7
f(x) - g(x) = x² + 3x - 70 - (x - 7)
= x² + 3x - 70 - x + 7
= x² + 2x - 63
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