Question

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систему
рівнянь:
† (7 + x)2-(5 + x)2 =6у,
((2 -y)² - (6 - y)2 = 4x.

Answer 1

(49 + 14x + x²) - (25 + 10x + x²) = 6у

49 + 14x + x² - 25 - 10x - x² = 6у

24 + 4x = 6у

4x = 6у - 24

x = (6у - 24) / 4

x = (3у - 12) / 2

(2 - y)² - (6 - y)² = 4x

(4 - 4y + y²) - (36 - 12y + y²) = 4x

4 - 4y + y² - 36 + 12y - y² = 4x

-32 + 8y = 4x

8y = 4x + 32

y = (4x + 32) / 8

y = (x + 8) / 2