Thank you for registering.

One of our academic counsellors will contact you within 1 working day.

Please check your email for login details.
MY CART (5)

Use Coupon: CART20 and get 20% off on all online Study Material

ITEM
DETAILS
MRP
DISCOUNT
FINAL PRICE
Total Price: Rs.

There are no items in this cart.
Continue Shopping

solve:- (2x-7)(x-3)(x+3)(2x+5)=91

solve:-


  (2x-7)(x-3)(x+3)(2x+5)=91

Grade:

1 Answers

Badiuddin askIITians.ismu Expert
147 Points
11 years ago

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 Experts
Badiuddin

 

Think You Can Provide A Better Answer ?

Provide a better Answer & Earn Cool Goodies See our forum point policy

ASK QUESTION

Get your questions answered by the expert for free