Question

If one of the zero of the polynomial 3x²+5x+k is -1. find k

Answer 1

3X sq+ 5X +K
put X=-1
3 (-1) Sq + 5 × -1 +K
3 -5 +K
-2+K
K=2 ANS

Answer 2

Heya friend here's your answer
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X = (-1)

3×(-1)^2 + 5× (-1) + K =0
3-5 + K =0
K-2 =0

K=2

HOPE IT HELPS YOU ☺