Question

If one zero of the quadratic polynomial x2 + 3x + k is 2 then find the value of k.​

Answer 1

Answer:

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Answer 2

Answer:

${x }^{2} + 3x \times k \\ = 2 { }^{2} + 3 \times 2 + k \\ = 4 + 6 + k \\ 10 + k = 0 \\ k = - 10$