Вопрос от посетителя:
4m 2m+1 2m-1
⁻⁻⁻⁻⁻⁻ -⁻⁻⁻⁻⁻⁻⁻⁻ + ⁻⁻⁻⁻⁻⁻⁻⁻ =
4m²-1 6m-3 4m+2
1 2 1
⁻⁻⁻⁻⁻⁻⁻ – ⁻⁻⁻⁻⁻⁻ + ⁻⁻⁻⁻⁻⁻⁻⁻ =
(x+y)² x²-y² (x-y)²
решите примеры по действиям и распишите
Илюха отвечает:
4 * m 2 * m + 1 2 * m – 1
————– – ————- + ————- =
4 * m² – 1 6 * m – 3 4 * m + 2
4 * m * 6 – (2 * m + 1) * 2 * (2 * m + 1) + 3 * (2 * m – 1) * (2 * m – 1)
———————————————————————————— =
6 * (2 * m – 1) * (2 * m + 1)
24 * m – 2 * (4 * m² + 4 * m + 1) + 3 * (4 * m² – 4 * m + 1)
———————————————————————— =
6 * (2 * m – 1) * (2 * m + 1)
24 * m – 8 * m² – 8 * m – 2 + 12 * m² – 12 * m + 3 4 * m² + 4 * m + 1
———————————————————— = ———————————– =
6 * (2 * m – 1) * (2 * m + 1) 6 * (2 * m – 1) * (2 * m + 1)
(2 * m + 1)² 2 * m + 1
———————————— = —————-
6 * (2 * m – 1) * (2 * m + 1) 12 * m – 6
1 2 1 (X – Y)² – 2 * (X² – Y²) + (X + Y)²
———– – ———– + ———– = —————————————- =
(X + Y)² X² – Y² (X – Y)² (X – Y)² * (X + Y)²
X² – 2 * X * Y + Y² – 2 * (X² – Y²) + X² + 2 * X * Y + Y² 4 * Y²
—————————————————————- = ————————
(X – Y)² * (X + Y)² (X – Y)² * (X + Y)²