Question

which of the following is a quadratic equation.
a)x2+3x+1=(x-2)2. b)x3-1=0. c)(x+1)2=5(x-9). d)5x+9=0​

Answer 1

option*C* is Quadratic equation

Step-by-step explanation:

(x+1)^2=5(x-9)

x^2+1+2x=5x-9

x^2+1+9+2x-5x=0

x^2-3x+10=0

So,It is a quadratic equation.

Option A,B,D are not Quadratic equations

Hope this helps you..

Answer 2

Answer:

The ans of this Question is

c ,