Question

If -3 is one of the zero of the polynomial x^2+mx+12 then value of m is ______​

Answer 1

Answer:

Since - 3 is a solution, so it must satisfy the given quad equation

${( - 3)}^{2} + ( - 3)m + 12 = 0 \\ 9 - 3m + 12 = 0 \\ 3m = 21 \\ m = 7$

Answer 2

Answer:

m is 7.......................