Q2 of 168 Page 7

Check whether the following are quadratic equations :

Given;

⇒


⇒


⇒ 4x4 + 20x2 + 25 = 9x


⇒ 4x4 + 20x2 − 9x + 25 = 0


∵ The highest power of x in the equation is 4;


∴ It is not a quadratic equation.


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