Question

is 7. If one of the zeros of the quadratic polynomial (k - 1) x² + k x + 1 is - 3, then the value of k [NCERT Exemplar (a) - 2 (b) (d) 4 3 This 4 3 (c) 3 2 3 3​

Answer 1

Answer:

Question:-

If one of the zeros of the quadratic polynomial (k - 1) x² + k x + 1 is - 3, then the value of k

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$\huge{\underline{\mathfrak \purple{Answer}}}$

Given one of the zeros of quadratic polynomial (k-1)x2+kx+1 is -3

so when we substitute -3 in the polynomial ,we get 0

→(k-1)(-3)²+k(-3)+1=0

→9k-9-3k+1=0

→6k-8=0

→k=8/6=4/3

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I hope this will help you! ;)