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A) n(n + 2) 224 b)x² + x = 156​
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10 votes
A) n(n + 2) 224
b)x² + x = 156​

User Ryanmrubin
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1 Answer

11 votes

Explanation:

b)


{x}^(2) + x - 156 = 0 \\ (x + 13)(x - 12) = 0 \\ x = - 13 \\ or \\ x = 12

User Comtaler
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