Question

Which equation is NOT a quadratic equation?

A.y = x2 + 6x - 5
B. y = 2x + 5
C.y = 2x2 + 5
D.y = 4x2

Answer 1

aN EQUATion is in quadratic form iff it is in the form ax^2+bx+c B is the correct answer

Answer 2

For A,clearly ax^2+bx+c is validated
For C, we can write; ax^2+b(0x)+c(0)
For D, we can as well write; ax^2+b(X()) +c())
Hence B is not a duadratic equation!