Herleid.
1p
\(2 ⋅ 4 a - 5 ⋅ a\)
○
\(2 ⋅ 4 a - 5 ⋅ a = 8 a - 5 a = 3 a\)
1p
Herleid.
1p
\(6 ⋅ -4 x + 5 ⋅ 3 x\)
○
\(6 ⋅ -4 x + 5 ⋅ 3 x = -24 x + 15 x = -9 x\)
1p
Herleid.
1p
\(6 a ⋅ 5 b + a ⋅ 2 b\)
○
\(6 a ⋅ 5 b + a ⋅ 2 b = 30 a b + 2 a b = 32 a b\)
1p
Herleid.
1p
\(p ⋅ -5 p + 3 p ⋅ -2 p\)
○
\(p ⋅ -5 p + 3 p ⋅ -2 p = -5 p^{2} - 6 p^{2} = -11 p^{2}\)
1p
Herleid.
1p
\(-3 a - 2 + 4 ⋅ a\)
○
\(-3 a - 2 + 4 ⋅ a = -3 a - 2 + 4 a = a - 2\)
1p
Herleid.
1p
\(6 x ⋅ 3 y ⋅ z + 2 x\kern{-.8pt}y\kern{-.8pt}z\)
○
\(6 x ⋅ 3 y ⋅ z + 2 x y z = 18 x y z + 2 x y z = 20 x y z\)
1p
Herleid.
1p
\(4 x + 3 ⋅ -x + 2 x\)
○
\(4 x + 3 ⋅ -x + 2 x = 4 x - 3 x + 2 x = 3 x\)
1p
Herleid.
1p
\(3 a - a ⋅ -6 a + 4 a\)
○
\(3 a - a ⋅ -6 a + 4 a = 3 a + 6 a^{2} + 4 a = 6 a^{2} + 7 a\)
1p
Herleid.
1p
\(a b - 2 a + 6 a ⋅ -5 b + 3 b\)
○
\(a b - 2 a + 6 a ⋅ -5 b + 3 b = a b - 2 a - 30 a b + 3 b = -29 a b - 2 a + 3 b\)
1p