Question

Kim and steffon both factor the equation x2-4=0 kim thinks that the root is 2 has multiplicity 2, but stefan thinks the root has a multiplicity of 1 which is correct

Answer 1

Given equation is :
`x^(2)-4=0`

Solving it we get,

`x^(2)=4`

`√(x)=√(4)` and
`√(x)=-√(4)`

This gives
`x=2` and
`x=-2` or we can say the roots are
`(x+2)(x-2)`

Here Stefan is right, the root has a multiplicity of 1.