(m-n)(x + c)
\[mx + mc - nx - nc\]
(a + 3)(a-2)
\[a^2 - 2a + 3a - 6 = a^2 + a - 6\]
(1-2a)(3a + 1)
\[3a + 1 - 6a^2 - 2a = -6a^2 + a + 1\]
(2a+3) (a-5)
\[2a^2 - 10a + 3a - 15 = 2a^2 - 7a - 15\]
(2m-n)(-x + c)
\[-2mx + 2mc + nx - nc\]
(-m-n)(3x + c)
\[-3mx - mc - 3nx - nc\]
(m-3n)(x + 2c)
\[mx + 2mc - 3nx - 6nc\]
2(m-n)(x + c)
\[2(mx + mc - nx - nc) = 2mx + 2mc - 2nx - 2nc\]
(10-a)(3a + 1)
\[30a + 10 - 3a^2 - a = -3a^2 + 29a + 10\]
(11-4a)(-3a + 10)
\[-33a + 110 + 12a^2 - 40a = 12a^2 - 73a + 110\]
(0,5-2a)(-2a + 1)
\[-a + 0.5 + 4a^2 - 2a = 4a^2 - 3a + 0.5\]
(3a + 3)(3a - 2)
\[9a^2 - 6a + 9a - 6 = 9a^2 + 3a - 6\]
(-2a+3)(a + 2)
\[-2a^2 - 4a + 3a + 6 = -2a^2 - a + 6\]
(0,7a + 3)(a – 2,1)
\[0.7a^2 - 1.47a + 3a - 6.3 = 0.7a^2 + 1.53a - 6.3\]
(4a + 3)(a - 25)
\[4a^2 - 100a + 3a - 75 = 4a^2 - 97a - 75\]
(x + 2)(3-x)
\[3x - x^2 + 6 - 2x = -x^2 + x + 6\]
(3x-5)(2+x)
\[6x + 3x^2 - 10 - 5x = 3x^2 + x - 10\]
(p-4)(2p+7)
\[2p^2 + 7p - 8p - 28 = 2p^2 - p - 28\]
(2x-1)(3x + 9)
\[6x^2 + 18x - 3x - 9 = 6x^2 + 15x - 9\]
(2a-1)(2a + 1)
\[4a^2 + 2a - 2a - 1 = 4a^2 - 1\]
(2n²-3n+1)(9-8n)
\[18n^2 - 16n^3 - 27n + 24n^2 + 9 - 8n = -16n^3 + 42n^2 - 35n + 9\]