Math, asked by PrinceRK357, 11 months ago

If x -3 is a factor of x²-ax-15, then a =
A. -2
B. 5
C. -5
D. 3

Answers

Answered by nivethas

0

Answer:

A.-2

Step-by-step explanation:

x-3=0

x=3

substitute x =3 in the equation

we get 9-3a-15=0

-3a-6=0

-3a=6

a=-2

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