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`        (2x-7)(x^2-9)(2x+5)=91. Anybody plzz answer this question`
2 years ago

```							vaibhav guptayou are a 10 class student and this not in you syllabus but one way to solve this is bylong multiplication method which can be used.first multiply the equation to get a four degree equation which is   4x4-4x3-71x2+36x+224=0   ------(i)on long division of (i) by its solution  (x-4) we get 4x3+12x2-23x-56=0    --------(ii)  and 4 became its root.now divide (ii) by  (2x+7)   we get   2x2-x-8 =0  ----(iii)  and another root is  -7/2.now solve (iii) and we get twoo roots x= (1+√65)/4,  x=(1-√65)/4.so its roots are	 x = 4	 x = -7/2 = -3.500	 x =(1-√65)/4=-1.766 	 x =(1+√65)/4= 2.266 .
```
2 years ago
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