Question

Which of the following is not a quadratic equation?

A) 2x²-x+3=0
B) 4x²-3x=0
C) X³-5x+3 =0
D) 4x² = 0​

Answer 1

Answer:

option c

its a cubic equation coz it has power of 3

Answer 2

$\large \underline{\underline{\tt Given}} :$

Equations :

• 2x² - x + 3 = 0
• 4x² - 3x = 0
• x³ - 5x + 3 = 0
• 4x² = 0

$\large \underline{\underline{\tt To\: Find}} :$

Which of the given equation is not a quadratic equation ?

$\large \underline{\underline{\tt Rules}} :$

Note : An equation is said to be quadratic in three conditions .

1. The degree of the equation is 2 .
2. The equation can be written in the form of ay² + by + c = 0
3. The constant a cannot be zero

$\large \underline{\underline{\tt Solution\:Required}} :$

By applying the second condition we get ,

• All equations have degree 2 rather than option c

Conclusion : Thus , option c is the correct answer