If (x -1) is a factor of x² -3ax +3a -7 then the value of a is :-
(a) 1 (b) -1
(c) 0 (d) 2
Answers
Answered by
6
Answer:
(c) 0
Step-by-step explanation:
Since (x-1) is a factor of x² - 3ax + 3a - 7 ,so the remainder must be 0.
Therefore, put x=1 in the equation
p(x) = x² - 3ax + 3a - 7
p(1) = (1)² - 3a (1) + 3a - 7 = 0
= 1 - 3a + 3a - 7 = 0
= - 6 = 0
Since their is no variable left , that's why the value of a = 0.
Answered by
3
Answer:
0
Step-by-step explanation:
Since (x-1) is a factor of x² - 3ax + 3a - 7 ,so the remainder must be 0.
Therefore, put x=1 in the equation
p(x) = x² - 3ax + 3a - 7
p(1) = (1)² - 3a (1) + 3a - 7 = 0
= 1 - 3a + 3a - 7 = 0
= - 6 = 0
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