From 7c2d4883fe1ebc454068b47e9e2cd1815577fb4b Mon Sep 17 00:00:00 2001
From: Sergey B Kirpichev <skirpichev@gmail.com>
Date: Thu, 6 May 2021 12:06:46 +0300
Subject: [PATCH] polys: removed PolyElement.extract_ground()

---
 diofant/polys/euclidtools.py |  8 +++++++-
 diofant/polys/rings.py       | 12 ------------
 2 files changed, 7 insertions(+), 13 deletions(-)

diff --git a/diofant/polys/euclidtools.py b/diofant/polys/euclidtools.py
index 46a5aa682b2..a84c2d2d299 100644
--- a/diofant/polys/euclidtools.py
+++ b/diofant/polys/euclidtools.py
@@ -194,7 +194,13 @@ def _zz_heu_gcd(self, f, g):
         x0 = ring.gens[0]
         domain = ring.domain
 
-        gcd, f, g = f.extract_ground(g)
+        fc = f.content()
+        gc = g.content()
+
+        gcd = self.domain.gcd(fc, gc)
+
+        f = f.quo_ground(gcd)
+        g = g.quo_ground(gcd)
 
         f_norm = f.max_norm()
         g_norm = g.max_norm()
diff --git a/diofant/polys/rings.py b/diofant/polys/rings.py
index 0f093fc51dc..5d326d11ba7 100644
--- a/diofant/polys/rings.py
+++ b/diofant/polys/rings.py
@@ -1221,18 +1221,6 @@ def trunc_ground(self, p):
         poly._strip_zero()
         return poly
 
-    def extract_ground(self, g):
-        f = self
-        fc = f.content()
-        gc = g.content()
-
-        gcd = f.ring.domain.gcd(fc, gc)
-
-        f = f.quo_ground(gcd)
-        g = g.quo_ground(gcd)
-
-        return gcd, f, g
-
     def _norm(self, norm_func):
         if not self:
             return self.ring.domain.zero