Question

13. Which of the following
is not a quadratic
equation=....
O 1) x2/2=2x+7

O 2) 6/y2-5=6
O 3) 2x2+ 3x=21
O 4) m2/3-8=5​

Answer 1

Answer :

3) 2x2 + 3x = 21 is not a quadratic equation

Answer 2

Step-by-step explanation:

opptio 2 is not a quadratic equation

because it is not a polynomial.

6/y² we can write it as 6y⃗² (y power -2)

polynomial: the equations with non nagetive power is called polynomial.

HERE: the power of y is in nagetive (i.e ⃗²)

so it is not a polynomial