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Mathematics
Arely Park
Today, 11:14
Simplify: (x+7) (x-4)
+4
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Harrison Patrick
Today, 12:04
0
x² + 3x - 28
Step-by-step explanation:
Each term in the second factor is multiplied by each term in the first factor
(x + 7) (x - 4)
= x (x - 4) + 7 (x - 4) ← distribute both parenthesis
= x² - 4x + 7x - 28 ← collect like terms
= x² + 3x - 28
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