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Grade: 11
        
Please post the solution of third question from the above image.
one year ago

Answers : (2)

Arun
22540 Points
							
Dear student
 
May be its other methods also. But it can also be solved by expanding
 
As it will be a simple bi-quadratic equation.
 
 
Hope it helps
 
Regards
Arun
one year ago
Aditya Gupta
1670 Points
							
(x^2-6x)^2= 81+2(x-3)^2
(x^2-6x)^2-9^2= 2(x-3)^2
(x^2-6x+9)(x^2-6x-9)= 2(x^2-6x+9)
So x=3 or x^2-6x-11=0 which you can easily find the roots by using quadratic formula
one year ago
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