find the value of k if one of the zero of quadratic polynomial is x2+kx+15 is 3
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Answered by
0
Answer:
hi friend,
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
I hope this will help u ;)
Answered by
0
Step-by-step explanation:
GIVEN:-)
→ One zeros of quadratic polynomial = -3.
→ Quadratic polynomial = ( k - 1 )x² + kx + 1.
Solution:-
→ P(x) = ( k -1 )x² + kx + 1 = 0.
→ p(-3) = ( k - 1 )(-3)² + k(-3) + 1 = 0.
=> ( k - 1 ) × 9 -3k + 1 = 0.
=> 9k - 9 -3k + 1 = 0.
=> 6k - 8 = 0.
=> 6k = 8. ....
Hence, the value of ‘k’ is founded .
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