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Imochoa asked Jul 17, 2022

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40 votes

Find KL.
K
X-1
L
12
M

Mathematics
college

Imochoa asked Jul 17, 2022

by Imochoa

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1 Answer

9 votes

Answer:

KL = 9

Explanation:

(7 + x - 1)(x - 1) = 12²

(x + 6)(x - 1) = 144

x² -x + 6x - 6 = 144

reduce:

x² + 5x -150 = 0

(x + 15)(x - 10) = 0

x = -15, x = 10

KL = 10 - 1 = 9

ShrapNull answered Jul 22, 2022

by ShrapNull

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