Question

Q, which of the following is
not a quadratic equation
1.(x+1)^2=2(x+3)
2.x^2-2x=2(3-x)
3.(x+2)^2=x^2-1
4.(x-2)^2=x+3​

Answer 1

Step-by-step explanation:

1. x^2 +1 = 2x + 6

x^2 = 2x +6 -1

x^2 = 2x +5

x^2/x = 2 +5

x = 3

2. x^2 -2x = 2 (3 -x)

x^2 -2x = 6 - 2x

x^2 - 2x/2x = 6

x^2 =6

3. x^2 + 2^2 = x ^2-1

x^2 + 4 = x^1

x^2 - x^1 = 4

x^2-1 = 4

x^1 = 4

4. x^2 -2^2 = x + 3

x^2 - 4 = x + 3

x^2 - x = 3 + 4

x^2 = 7

I hope you understood the problem

Answer 2

Answer:..

Step-by-step explanation:

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