Zadanie 1
Oblicz korzystając ze wzorów:
(4a-2)(4a+2)=
3(2a+1)(2a-1)=
Wzory:
(a+b)² = a² + 2ab + b²
(a-b)² = a² - 2ab + b²
a²-b² = (a - b) * (a + b)
" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2025 KUDO.TIPS - All rights reserved.
(4a-2)(4a+2) = (4a)²-2² = 16a²-4
3(2a+1)(2a-1) = 3[(2a)²-1²] = 3(4a²-1) = 12a²-3
Skorzystano ze wzoru na różnicę kwadratów.
a²-b² = (a-b)(a+b)
(4a-2)(4a+2)=16a^-4
3(2a+1)(2a-1)=3(4a^-1)=12a^-3
(4a-2)(4a+2)=-=