Question

1. Which of the following is not a quadratic equation?
a) x-1 = 4
___
x
b) 4x - 2 = x
-----
x
c) x + 1 = 5
___
x
d) 2x2 – 3 = 4x2 - 4x​

Answer 1

Answer:

a) x-1 =4

x=4+1

x=5

b) 4x-2=x

4x-x=2

4x=2

x=2/4

x=2

c) x+1=5

x=5-1

x=4

d) 2×2-3=4×2-4x

4-3=8-4x

x+4x=8

5x=8

x=8/5