If one root of the quadratic polynomial X²+ 3x - k is 3 , find the value of k.
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Answered by
4
p( x ) = x² + 3x - k
p(3) = (3)² + 3 × 3 - k
=> 9 + 9 - k = 0
=> 18 - k = 0
=> - k = -18
=> k = 18
p(3) = (3)² + 3 × 3 - k
=> 9 + 9 - k = 0
=> 18 - k = 0
=> - k = -18
=> k = 18
Answered by
1
Very simple !!
3 is one of the root of polynomial so it satisfy the given equation !!
x² + 3x - k = 0
9 + 9 -k = 0
k = 18
hope it help you !!
thanks
3 is one of the root of polynomial so it satisfy the given equation !!
x² + 3x - k = 0
9 + 9 -k = 0
k = 18
hope it help you !!
thanks
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