August 2022 2 7 Report
Реши систему уравнений методом подстановки.
d) m² - mn = 5
m² + mn = - 1

e) 4m² - mn = 5
mn - m² = 7

f) x² + y² = 25
2x² + y² = 9

a) x² + y² = 37
x - y = 5

b) - 2ab = 9
2b +3a = 6

c) m²+16n² = 16
m+2 = 2n
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