Odpowiedź:
Szczegółowe wyjaśnienie:
1. (-1/3 + 1/3 ) : (-1/3 - 1/3) = 0 : ( -2/3) = 0
2. 4 x (-2) - 2 x (-2^2) + 5 x (-2) - 6 x (-2^2) + 4 = -8 - 2 x 4 - 10 - 6 x 4 + 4 =
= -8 - 8 - 10 - 24 + 4 = -46
3. 3/4(4x-32) = 3x - 24
4. (x+4)x(x^2-3x-2) = x^3 - 3x^2 - 2x + 4x^2 - 12x - 8 = x^3 + x^2 - 14x - 8
5. -15+(-3)x[2(x-7)-2(1-x)] = -15+(-3)[2x - 14 - 2 + 2x] = -15+(-3)[4x-16] = -15 + (-12x + 48) = -15 - 12x + 48 = 33 - 12x
6. (2y+6)^2 = 4y^2 + 24y + 36
(2-x)^2 = 4 - 4x + x^2
7. 4x^2 - 36x + 81 = (2x - 9)
8. (4-3x)(4+3x) = 16 - 9x^2