Question
Evaluate: $(c + 5)(c - 3)$
✓
Answer
$(c + 5)(c - 3) = c (c - 3) +5 (c - 3)$
$= c^2 - 3c + 5c - 15$
$= c^2 + 2c - 15$
$= c^2 - 3c + 5c - 15$
$= c^2 + 2c - 15$
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