Question

# If (x+1)is a factor of $$x^2-3ax + 3a -7$$, then the value of a is

A
1
B
-1
C
0
D
-2

Solution

## The correct option is A 1Since $$x+1$$ is a factor of the polynomial $$p(x)=x^2-3ax + 3a-7$$Therefore, by Factor theorem $$p(-1)=0$$$$\Rightarrow (-1)^2-3a(-1) + 3a-7=0$$$$\Rightarrow 1+3a+ 3a-7=0\Rightarrow a=1$$Option A is correct.Mathematics

Suggest Corrections

0

Similar questions
View More

People also searched for
View More