Question

daca x+y=-2√3 si x^2-y^2=4√6 x-y = ? dau coroana

Answer 1

Explicație pas cu pas:

x + y = - 2√3

x^2 - y^2 = 4√6

(x+y)(x-y) = 4√6

- 2√3(x-y) = 4√6

x-y = - 4√6/2√3

x-y = -2√6/√3

x-y = -2√6•√3/√3•√3

x-y = -2√18/√9

x-y = -2 • 3√2/3

x-y = - 2√2

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