Question

Which one is the quadratic equation?
5
(A)5/x =3x²
(B) x(x+5)=4
(C) n-1=21
(D)1/x (x+2) = x
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Answer 1

Answer:

A) 5/x = 3x²

because it has power 2.

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Answer 2

Answer:

B

Step-by-step explanation:

x(x+5)=4

x^2+5x=4

x^2+5x-4=0

which is in the form ax^2+bx-c which is a quadratic equation