Which of the following is not a quadratic equ | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) quadratic equation is an equation of the form $ax^2 + bx + c = 0$,where $a 
eq 0$.Let us simplify each option:$A$: $x(3x + 7) = (x + 1)(x - 1) \i

Vedclass · Accepted Answer

$2x(3x - 5) + 1 = 3x(2x + 5) + 3$

Vedclass · Answer

(C) quadratic equation is an equation of the form $ax^2 + bx + c = 0$,where $a 
eq 0$.Let us simplify each option:$A$: $x(3x + 7) = (x + 1)(x - 1) \implies 3x^2 + 7x = x^2 - 1 \implies 2x^2 + 7x + 1 = 0$. This is a quadratic equation.$B$: $x^2 - 2x + 1 = 0$. This is already in the form $ax^2 + bx + c = 0$ with $a = 1$. This is a quadratic equation.$C$: $2x(3x - 5) + 1 = 3x(2x + 5) + 3 \implies 6x^2 - 10x + 1 = 6x^2 + 15x + 3 \implies -10x + 1 = 15x + 3 \implies 25x + 2 = 0$. This is a linear equation,not a quadratic equation.$D$: $4 - 3x - 2x^2 = 0$. This is a quadratic equation with $a = -2$.

Which of the following is not a quadratic equation?

Similar Questions

Solve the following quadratic equation using the method of factorization: $3x^{2} = -11x - 10$.

Does there exist a quadratic equation whose coefficients are rational but both of its roots are irrational? Justify your answer.

If the roots of the following quadratic equation exist,find them by the method of completing the square: $3x^2 + 7x + 5 = 0$.

The sum of squares of two consecutive odd numbers is $514$. Find those numbers.

If the value of the discriminant of the quadratic equation $2x^{2} + 5x - k = 0$ is $81$,then $k = \dots$

Vedclass Test Series

Exam Paper Generator

Online Exam Module