Ответ:
В решении.
Объяснение:
1) 5m² - 10mn + 5n² = m=142; n=42;
= 5(m² - 2mn + n²) =
= 5(m - n)² =
= 5(142 - 42)² =
= 5 * 100² = 5 * 10 000 = 50 000;
2) 6m² + 12mn + 6n² = m=56; n=44;
= 6(m² + 2mn + n²) =
= 6(m + n)² =
= 6(56 + 44)² =
= 6 * 100² =
= 6 * 10 000 = 60 000;
3) -36a³ + 4a²b - 1/9 ab² = a=4; b=48;
= -a(36a² - 4ab + 1/9 b²) =
= -a(6a - 1/3 b)² =
= -4(6 * 4 - 1/3 * 48)² =
= -4(24 - 16)² =
= -4 * 8² = -4 * 64 = -256;
4) -64a³ - 8a²b - 1/4 ab² = a= -6; b=84;
= -a(64a² + 8ab + 1/4 b²) =
= -a(8a + 1/2 b)² =
= -(-6) * (8 * (-6) + 42)² =
= 6(-48 + 42)² = 6 * 36 = 216.
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Answers & Comments
Ответ:
В решении.
Объяснение:
1) 5m² - 10mn + 5n² = m=142; n=42;
= 5(m² - 2mn + n²) =
= 5(m - n)² =
= 5(142 - 42)² =
= 5 * 100² = 5 * 10 000 = 50 000;
2) 6m² + 12mn + 6n² = m=56; n=44;
= 6(m² + 2mn + n²) =
= 6(m + n)² =
= 6(56 + 44)² =
= 6 * 100² =
= 6 * 10 000 = 60 000;
3) -36a³ + 4a²b - 1/9 ab² = a=4; b=48;
= -a(36a² - 4ab + 1/9 b²) =
= -a(6a - 1/3 b)² =
= -4(6 * 4 - 1/3 * 48)² =
= -4(24 - 16)² =
= -4 * 8² = -4 * 64 = -256;
4) -64a³ - 8a²b - 1/4 ab² = a= -6; b=84;
= -a(64a² + 8ab + 1/4 b²) =
= -a(8a + 1/2 b)² =
= -(-6) * (8 * (-6) + 42)² =
= 6(-48 + 42)² = 6 * 36 = 216.