if the 5th term 8th term of the GP 2 power 0 2 power 12 power to earth I'm roots of a quadratic equation then find the quadratic equation
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1
Step-by-step explanation:
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5th term= 2⁴
8th term=2^7
Equation=
x²-(2⁴-2^7) X+2⁴.2^7=0
x²-144x+2048=0
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Answered by
4
let 1st term be a and diffrence d
3rd term = a + 2d
5th = a+ 4d
8th = a+ 7d
from given condition
(a+2d)(a+7d) = (a+4d)^2
or a^2 +9ad + 14 d^2 = a^2+8ad + 16d^2
or ad = 2d^2 or d = a/2
so the differece = a/2 and terms
nth term = a + (n-1)a/2
the 5th term = 3a
3rd term = 2a
ratio = 3/2
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