Question

If x-3 is a factor of  x-ax
$(a - b) + (b - c) + (c - a)$
​

Answer 1

Answer:

$\huge \bf \underline {\underline{Given}}$

x - 3 is a factor x² - ax - 15

Let p (x) = x 2 - a x - 15

we know that if x - α is a factor of p (x) then p (α) = 0

$\huge\orange{\textsf{then,}}$

p (3) = 0

(3) 2 -a (3)−15 = 0

9−3a−15 = 0

3a = -6a

$\large\red{\textsf{= -2}}$

$\huge\mathtt\pink{\textsf{MissEleGant}}$