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by G4. Ifthe first term of an AP is 22, the common difference is ㅢ and sum to-1n terms is 24, find the number of terms |
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Answer» a = 22 d = -4Sn = 24(n/2) (2a + (n - 1)d) = 24 n(44 - 4n + 4) = 48 48n - 4n^2 = 48 4n^2 - 48n + 48 = 0 n^2 - 12n + 12 = 0It cannot be factorised.Please recheck the question. please recheck the question. please recheck the question. |
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