Ответ:
(t-16)² = t²- 32t+256
(17+u)² = 289+34u+u²
(18-v)² = 324 - 36v+v²
(19+w)² = 361 + 38w + w²
(20-z)² = 400 - 40z + z²
(2x+y)² = 4x² + 4xy + y²
(3a-b)² = 9a² - 6ab + b²
(4c+2)² = 16c² + 16c + 4
(5d-3)² = 25d² - 30d + 9
(6h+4)² = 36h² + 48h + 16
(7k-2)² = 49k² - 28k + 4
(3m+4n)² = 9m² + 24mn + 16n²
(5p-6q)²+60pq = 25p² - 60pq + 36q² + 60pq= 25p²+36q²
2(x+y)² - 4xy= 2(x²+2xy+y²) - 4xy= 2x² + 4xy + 2y² - 4xy=2x²+2y²=2(x²+y²)
(3a-7b)² - 42ab= 9a² - 42ab + 49b² - 42ab= 9a²-84ab+49b²
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Ответ:
(t-16)² = t²- 32t+256
(17+u)² = 289+34u+u²
(18-v)² = 324 - 36v+v²
(19+w)² = 361 + 38w + w²
(20-z)² = 400 - 40z + z²
(2x+y)² = 4x² + 4xy + y²
(3a-b)² = 9a² - 6ab + b²
(4c+2)² = 16c² + 16c + 4
(5d-3)² = 25d² - 30d + 9
(6h+4)² = 36h² + 48h + 16
(7k-2)² = 49k² - 28k + 4
(3m+4n)² = 9m² + 24mn + 16n²
(5p-6q)²+60pq = 25p² - 60pq + 36q² + 60pq= 25p²+36q²
2(x+y)² - 4xy= 2(x²+2xy+y²) - 4xy= 2x² + 4xy + 2y² - 4xy=2x²+2y²=2(x²+y²)
(3a-7b)² - 42ab= 9a² - 42ab + 49b² - 42ab= 9a²-84ab+49b²
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