Question

If one zero of the quadratic polynomial (k + 3) x2 + kx + 3 is −2 find k

Answer 1

Answer:

it is your answer

hope will help you

Answer 2

$(k + 3)x^{2} +kx+3 is-2 \\p(x) = (k + 3 )x^{2} +kx +3\\p(-2)=(k+3)x^{2} +kx+3\\ 0=4k+12-2k+3\\ 0=4k-2k+12+3\\ 0=2k+15\\2k=15\\k=\frac{15}{2}$