Question

Check whether the following are quadratoc equations or not

1). (x + 2)^2 = 4(x + 3)

2). x + 3/x= x^2

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Answer 1

first one is a quadratic equation

second on is not quadratic equation

2). if the variable is in the denominator then the equation is not quadratic equation

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Answer 2

Answer:

1:-(x+2)^2=4(x+3)

x^2+4+4x=4x+12

x^2+4x-4x+4-12=0

x^2-8=0

yes ,given equation is quadratic equation because,it is form in "ax^2+bx+c=0"