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

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