Question

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Answer 1

Answer:

a=-1

Step-by-step explanation:

x-2 is factor

therefore x=2

put value of x in equation

(2)² - a(2) -6=0

4 - 2a - 6= 0

-2 - 2a= 0

a= -1

hope it may help you

Answer 2

Answer:

a=(-1)

Step-by-step explanation:

Let f(x)=x²-ax-6

As (x-2) is a factor of the above equation

f(x)

Take g(x)=x-2

So,

g(x)=0

x-2=0

x=2

PUTTING THE VALUE OF "x" in f(x), we get

(2)²-2a-6=0

4-2a-6=0

-2a-2=0

-2(a+1)=0

a=(-1)

HOPE IT HELPS✌