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Find the greatest term in the expansion of (7-5x)^2 where x=2/3 Please explain the steps. Thankyou in advance.

Find the greatest term in the expansion of (7-5x)^2 where x=2/3
Please explain the steps.
Thankyou in advance.

Grade:12

2 Answers

Nishant Vora IIT Patna
askIITians Faculty 2467 Points
6 years ago

Hello Student. Please find the solution


(7-5x)^2 = 49 + 25x^2 – 70x
so first term = 49
second term = -70*2/3
third term = 25 x^2 = 25*4/9 = 11.11

So 49 is greatest
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Swagat Bordoloi
37 Points
6 years ago
Sorry sir.. i am extremely sorry.. Actually i typed in the wrong question.. it was (7-5x)^11, where x=2/3.. I am extremely sorry once again. Sir please give me the correct answer for this.

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