if x-2 is a zero of x^3-4x^2 + kx find x
Answers
Answered by
2
Your Question needs a correction,
Correct question ; find the value of k
Solution,
Given that (x - 2) is the factor, by factor theorem,
x - 2 = 0
x = 2
Then,
x³ - 4x² + kx = 0
2³ - 4(2)² + k(2) = 0
8 - 4(4) + 2k = 0
8 - 16 + 2k = 0
-8 + 2k = 0
2k = 8
k = 4
I hope this will help you
(-:
Correct question ; find the value of k
Solution,
Given that (x - 2) is the factor, by factor theorem,
x - 2 = 0
x = 2
Then,
x³ - 4x² + kx = 0
2³ - 4(2)² + k(2) = 0
8 - 4(4) + 2k = 0
8 - 16 + 2k = 0
-8 + 2k = 0
2k = 8
k = 4
I hope this will help you
(-:
Answered by
1
Hey friend, ☺️ here is your answer ____________________________
If x - 2 is a zero then it can makes the whole polynomial equals to zero.
So,
x - 2 = 0
x = 2
Putting this in the equation
Hope this helps you..
If x - 2 is a zero then it can makes the whole polynomial equals to zero.
So,
x - 2 = 0
x = 2
Putting this in the equation
Hope this helps you..
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