Question

For what value k is -2 is a zero of the ploynomial 3x square plus 4x plus 2k

Answer 1

ur answer is k=-2............

Answer 2

f(x)=3x^2+4x+2k

f(-2)=0

so,

3(-2)^2 +4(-2) +2k=0

3*4 - 8 +2k=0

12-8+2k=0

2k=-4

k=-2