Question

(x-3) is a factor of x ^-2 -ax -15 then the value of a us​

Answer 1

Answer:

a= -2

Step-by-step explanation:

x^2 - ax. - 15 putting the value of x=3

or (3)^2 - a(3) - 15

or 9-3a-15

or 9-3a=15

or -3a = 15-9

or -3a= 6

or a= -2

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