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Plss help me ans this question :a+3d/a+9d =a+d/a+5d=k, then find the value of k (a,d>0) Plss help me ans this question :a+3d/a+9d =a+d/a+5d=k, then find the value of k (a,d>0)
a+3d/a+9d =a+d/a+5ddo cross multiyply,(a+3d)(a+5d) = (a+d)(a+9d)a^2 + 5ad + 3ad + 15d^2 = a^2 + 9ad + ad + 9d^2-2ad + d^2 = 0ord^2 – 2ad = 0d(d – 2a) = 0d cannot be zero.Therefore,d = 2ak = 3a/11a = 3/11.
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