Unable to build this project

[nelsola]

First i upgraded my gradle build tools to 3.4.2 then i upgraded my compile sdk to 28 and i'm still getting errors,
Currently i'm getting:
Manifest merger failed : Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to element at AndroidManifest.xml:5:5-19:19 to override.

Can someone who has gotten this to work just paste their app gradle file here for me to use. I just cant seem to get this to work.