Zadanie 2 - rozwiązanie:
a) (2x - 3)(x - 1) = 2x² - 2x - 3x + 3 = 2x² - 5x + 3
b) Tabelka: 3a², -4a,
15a, -20
(a + 5)(3a - 4) = 3a² - 4a + 15a - 20 = 3a² + 11a - 20
c) Tabelka: 5a, -b
a 5a², -ab
2b 10ab, -2b²
(a + 2b)(5a - b) = 5a² - ab + 10ab - 2b² = 5a² + 9ab - 2b²
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Zadanie 2 - rozwiązanie:
a) (2x - 3)(x - 1) = 2x² - 2x - 3x + 3 = 2x² - 5x + 3
b) Tabelka: 3a², -4a,
15a, -20
(a + 5)(3a - 4) = 3a² - 4a + 15a - 20 = 3a² + 11a - 20
c) Tabelka: 5a, -b
a 5a², -ab
2b 10ab, -2b²
(a + 2b)(5a - b) = 5a² - ab + 10ab - 2b² = 5a² + 9ab - 2b²