Question

solve allfor 50 points.

Answer 1

Answer:

question-19

k=7

other factor=(x-4)

Step-by-step explanation:

x^2-kx+12=0

x-3=0

x=3

put x = 3

3^2-k*(3)+12

9-3k+12=0

-3k=-21

k=7

Answer 2

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k=7

and the other factor is (x-4)

STEPS

${x }^{2} - kx + 12 = 0 \\ x - 3 = 0 \\ so \: \: \: x = 3 \\ if \: we \: put \: x = 3 \\ {3}^{2} - k(3) + 12 \\ - 3k = \: \: - 21 \\ k = 7$

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