Answer:
-x^2 + 8x - 7
Explanation:
(7 - x)(x - 1)
(7 * x) + (7 * -1) + (-x * x) + (-x * -1)
7x - 7 - x^2 + x
8x - 7 - x^2
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-x² + 8x - 7
Step 1: Write expression
Step 2: FOIL (First Outside Inside Last)
7x - 7 - x² + x
Step 3: Combine like terms
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