Rekenvolgorde met letters
Herleid.
1p
\(4 ⋅ x + 2 ⋅ 3 x\)
○
\(4 ⋅ x + 2 ⋅ 3 x = 4 x + 6 x = 10 x\)
1p
Herleid.
1p
\(5 ⋅ -2 a - 3 ⋅ a\)
○
\(5 ⋅ -2 a - 3 ⋅ a = -10 a - 3 a = -13 a\)
1p
Herleid.
1p
\(p ⋅ -5 q + 4 p ⋅ -6 q\)
○
\(p ⋅ -5 q + 4 p ⋅ -6 q = -5 p q - 24 p q = -29 p q\)
1p
Herleid.
1p
\(5 p ⋅ 4 p + 2 p ⋅ -3 p\)
○
\(5 p ⋅ 4 p + 2 p ⋅ -3 p = 20 p^{2} - 6 p^{2} = 14 p^{2}\)
1p
Herleid.
1p
\(3 a - 1 + 6 ⋅ 2 a\)
○
\(3 a - 1 + 6 ⋅ 2 a = 3 a - 1 + 12 a = 15 a - 1\)
1p
Herleid.
1p
\(x ⋅ 3 y ⋅ 4 z + 5 x\kern{-.8pt}y\kern{-.8pt}z\)
○
\(x ⋅ 3 y ⋅ 4 z + 5 x y z = 12 x y z + 5 x y z = 17 x y z\)
1p
Herleid.
1p
\(-2 x + 5 ⋅ -6 x + x\)
○
\(-2 x + 5 ⋅ -6 x + x = -2 x - 30 x + x = -31 x\)
1p
Herleid.
1p
\(-5 p + p ⋅ 6 p + 2 p\)
○
\(-5 p + p ⋅ 6 p + 2 p = -5 p + 6 p^{2} + 2 p = 6 p^{2} - 3 p\)
1p
Herleid.
1p
\(4 a b - 2 a + a ⋅ 5 b + 6 b\)
○
\(4 a b - 2 a + a ⋅ 5 b + 6 b = 4 a b - 2 a + 5 a b + 6 b = 9 a b - 2 a + 6 b\)
1p