Question

if xsquare -x-42=(x+k)(x+6), then k =​

Answer 1

Step-by-step explanation:

x2-x-42=(x+k)(x+6)

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Answer 2

Answer:

Ans. k = -7

We have x² - x - 42 = (x+k)(x+6)

=> x² -7x + 6x - 42 = (x+k)(x+6)

x(x-7) +6(x-7) = (x+k)(x+6)

=> (x-7)(x+6)= (x+k)(x+6)

=> (x-7)= (x+k)

=> k = -7