For what value of k, (k^2 - 4) x^2 + 2x - 9 = 0 is not quadratic equat

1.	For what value of k, (k^2 - 4) x^2 + 2x - 9 = 0 is not quadratic equation?
Answer» DEAR student! ---------------- it wont be quadratic if the SQUARE of X becomes '0' so FOLLOWING one basic step we will get that! --------------------------------------------------------------- $<klux>K</klux>^{2} -4=0\\=>k^{2} =4\\=>k= +-2\\\\$ so the coefficient of 'k' is 0 ans: ±2 thanks!

For what value of k, (k^2 - 4) x^2 + 2x - 9 = 0 is not quadratic equation?

Answer»

DEAR student!

----------------

it wont be quadratic if the SQUARE of X becomes '0'

so FOLLOWING one basic step we will get that!

---------------------------------------------------------------

$<klux>K</klux>^{2} -4=0\\=>k^{2} =4\\=>k= +-2\\\\$

so the coefficient of 'k' is 0

ans: ±2

thanks!

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For what value of k, (k^2 - 4) x^2 + 2x - 9 = 0 is not quadratic equation?​

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For what value of k, (k^2 - 4) x^2 + 2x - 9 = 0 is not quadratic equation?