If-3 is one of the zero of the polynomial (k-1)x2+kx+1,find the value of k.
class 10 (polynomial )
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Here's your answer. Put the value of zero in the polynomial.
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Radheyshyamshah:
what must be added to 4x4+2x3-2x2-x-1 so that the resulting polynomial is divisible by x2-2x-3
answer is 61x-65
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Given : one zero of the quadratic polynomial (k - 1)x²+ kx + 1 is -3,
To find : the value of k
Solution:
quadratic polynomial (k - 1)x²+ kx + 1
-3 is one zero
Hence substituting k = - 3 will result into zero
(k - 1)(-3)²+ k(-3)+ 1 = 0
=> 9(k - 1) -3k + 1 = 0
=> 9k - 9 - 3k + 1 = 0
=> 6k = 8
=> 3k = 4
=> k = 4/3
Value of k = 4/3
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