Question

check whether (x+2)3=x(1-x2) is a quadratic equation or not
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Answer 1

Answer:

2

+3x+1=(x−2)  

2

 

x  

2

+3x+1=x  

2

−4x+4

⇒x  

2

+3x+1−x  

2

+4x−4=0

⇒7x−3=0 has its highest power 1

Hence it is not a quadratic equation.