Question

{a²+b²=25
{ab=12
спасибо​

Answer 1

{a²+b²=25

{ab=12

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a²+b²=a²+b²+2ab - 2ab = (a + b)² - 24 = 25

(a + b)² = 49

1/ a + b = 7

ab = 12

a = 3  b = 4

a = 4  b = 3

2/ a + b = -7

ab = 12

a = -3 b = -4

a= -4 b = -3

(-3,-4)(-4,-3)(3,4)(4,3)