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is x^2 + 1/x = 4 a quadratic equations​

Sagot :

Answer:

[tex]\large\boxed{\pink{ \leadsto The \ given \ equation \ is \ not \ a \ Quadratic \ equation . }}[/tex]

Step-by-step explanation:

Given equation to us is ,

[tex]\green{\implies x^2+\dfrac{1}{x}=4 }[/tex]

So , a equation is said to be a quadratic equation if the highest degree of the variable is 2 . On simplifying the Equation ,

[tex]\implies x^2 +\dfrac{1}{x}=4 [/tex]

Taking x as LCM ,

[tex]\implies \dfrac{x^2.x + 1 }{x}= 4 [/tex]

Transposing x to RHS .

[tex]\implies x^3 + 1 = 4x [/tex]

Putting all terms in LHS

[tex]\boxed{\bf \implies x^3 - 4x - 1 = 0 }[/tex]

Since here the highest degree of the variable is 3 not 2 . So its a cubic equation and not a quadratic equation .

Hence the given equation is not a quadratic equation .