Квадратные уравнения (решение)
v1.4 · 7.5 MB · code 9
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File information
UpdatedJan 15, 2026
PublishedSep 10, 2021
Packagecom.kotov.x2
Versionv1.4 (9)
Size7.5 MB
MD580233dca704aaba9a8f0b6640f5726f3
Min SDK16
Malware scanTRUSTED
Signature SHA17E:DE:A5:F5:42:04:A4:45:F1:95:CB:E1:DD:2A:6C:98:D3:3F:94:53
SignerCN="Eugene Kotov C=UA"
Total downloads100,000
This version100,000
DeveloperEugene Kotov
Age ratingEveryone
What's new in v1.4
Обновлена целевая версия Android
Security scan
TRUSTED
- Developer signature verified 2026-01-15
- Signature SHA1 7E:DE:A5:F5:42:04:A4:45:F1:95:CB:E1:DD:2A:6C:98:D3:3F:94:53
- File MD5 80233dca704aaba9a8f0b6640f5726f3
How to install Квадратные уравнения (решение) v1.4 on Android API 16+
Takes about 2 minutes. You'll need roughly 7.5 MB of free storage.
- Grab com.kotov.x2_9.apk — hit the Download button above (7.5 MB). If your browser warns about APK files, choose Keep or Download anyway — that warning fires on every APK, not just this one.
- Trust your browser to install — on Android 8+ go to Settings → Apps → Special access → Install unknown apps, pick the app you downloaded with (Chrome, Firefox, Files, etc.), and flip Allow from this source. On older Android, toggle Unknown sources under Security.
- (Optional) Verify the file — compute the MD5 of the downloaded APK and make sure it matches 80233dca704aaba9…. Any difference means the file is corrupted or tampered — delete and re-download.
- Open the APK — tap the download notification, or find com.kotov.x2_9.apk in your Files app under Downloads, then tap it. Android's package installer will appear.
- Check the signer — the install screen will name the publisher. For this build it should read CN="Eugene Kotov C=UA". If it doesn't match, cancel — you have the wrong file.
- Review permissions & tap Install — scroll the permission list, then confirm. If Play Protect flags it, tap Install anyway (this APK was scanned as TRUSTED).
- Done — open Квадратные уравнения (решение) — tap Open on the install screen, or find the Квадратные уравнения (решение) icon in your app drawer.
Common install errors for Квадратные уравнения (решение)
- "App not installed" — usually means an older or differently-signed version is already on your device. Uninstall it first, then retry. Your data may be lost unless you back it up.
- "Parse error" — the APK is for a newer Android than yours. This version needs Android API 16 or later. Pick an older build from the versions list below.
- "There was a problem parsing the package" — the download was interrupted. Delete the file and re-download over Wi-Fi.