Mathematics
Mathematics, 28.01.2021 17:10, tessadummer0033

The expressions 2(x^2 – 4x– 21) - (x – 7)(x + 77) and ( x– 7)(x + k) are equivalent. What must be the value of k?
A.-148
B.-71
C.83
D.160

answer
Answers: 3

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The expressions 2(x^2 – 4x– 21) - (x – 7)(x + 77) and ( x– 7)(x + k) are equivalent. What must be t...

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