Question

if minus 2 is a zero of the polynomial 3x
${x}^{2}$
4 x + 2 k then find the value of k​

Answer 1

Answer:

k= -2

Step-by-step explanation:

since -2 is zero of polynomial. 3x²+4x+2k

according to the factor theorem when putting

x= -2 ,the polynomial should become zero

=> 3×(-2)²+4×(-2)+2k=0

=> 12-8+2k= 0

=> 2k= -4

=> k = -2