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HINT Lel iTheir sum is 360°11. Find four numbers in AP whose sum is 28 and the sum of whose squaresis 216.s which are the four terms of an AP such that the |
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Answer» Let the four numbers be (a-3d), (a-d), (a+d) & (a+3d).(Observe that they are in Arithmetic Progression)so (a-3d)+(a-d)+(a+d)+(a+3d)=28 → a=7.(a-3d)²+(a-d)²+(a+d)²+(a+3d)²=216 → 4(a²)+20d²=216 → d=±1.Hence, the numbers are 4, 6, 8 & 10. how it is 20d² and afre where is the square in answer sum of whose squares see in the question it is mentioned |
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