the quadratic equation pr-2px + 15 =has to)If the common difference of – InterviewSolution

1.

the quadratic equation pr-2px + 15 =has to)If the common difference of an A-Pis-6, find a-

Answer»

Common difference of APd = - 6

nth term = a + (n-1)d

Then,a16 = a + 15da12 = a + 11d

a16 - a12 = (a + 15d) - (a + 11d) = 15d - 11d = 4d = 4*(-6) = - 24

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