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solve:- (2x-7)(x-3)(x+3)(2x+5)=91
solve:-
(2x-7)(x-3)(x+3)(2x+5)=91
Dear sayan (2x-7)(x-3)(x+3)(2x+5)=91 (2x-6-1)(x-3)(x+3)(2x+6-1)=91 [2(x-3)2 - (x-3)][ 2(x+3)2 - (x+3)]=91 4(x-3)2(x+3)2 -2(x+3)2(x-3)-2(x-3)2(x+3) +(x-3)(x+3) = 91 4(x-3)2(x+3)2 -2(x+3)(x-3)2x +(x2-9) = 91 [x+2(x-3)(x+3)]2 =100 or 2x2 +x-18 =±10 + sign 2x2 +x-28 =0 - sign 2x2 +x-8 =0 now solve these two equation and find solution Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE & AIEEE preparation. All the best. Regards,Askiitians ExpertsBadiuddin
Dear sayan
(2x-6-1)(x-3)(x+3)(2x+6-1)=91
[2(x-3)2 - (x-3)][ 2(x+3)2 - (x+3)]=91
4(x-3)2(x+3)2 -2(x+3)2(x-3)-2(x-3)2(x+3) +(x-3)(x+3) = 91
4(x-3)2(x+3)2 -2(x+3)(x-3)2x +(x2-9) = 91
[x+2(x-3)(x+3)]2 =100
or 2x2 +x-18 =±10
+ sign
2x2 +x-28 =0
- sign
2x2 +x-8 =0
now solve these two equation and find solution
Please feel free to post as many doubts on our discussion forum as you can. If you find any question Difficult to understand - post it here and we will get you the
answer and detailed solution very quickly. We are all IITians and here to help you in your IIT JEE & AIEEE preparation.
All the best. Regards,Askiitians ExpertsBadiuddin
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