If two of the equations x2-kx + 6 = 0 are 5 larger than two of the equations x2 + KX + 6 = 0 respectively, then the value of K is______ .

If two of the equations x2-kx + 6 = 0 are 5 larger than two of the equations x2 + KX + 6 = 0 respectively, then the value of K is______ .

Let two of the equations x2 + KX + 6 = 0 be a and B respectively, then two of the equations x2-kx + 6 = 0 are a + 5 and B + 5 respectively. According to the meaning of the question, we get a + B = - K, a + 5 + B + 5 = k, so 10-K = k, and the solution is k = 5