Question

(3х-5)^2+2x=5
решите

Answer 1

$(3x - 5)^{2} + 2x = 5$
$9 {x}^{2} + 25 - 30x + 2x - 5 = 0$
$9 {x}^{2} - 28x + 20 = 0$
$d = 28^{2} - 4 times 9 times 20 = 64$
$x = frac{28 - 8}{18} = frac{20}{18} = frac{10}{9}$
$x = frac{28 + 8}{18} = frac{36}{18} = 2$

Answer 2

че за приложение?

Answer 3

photomaths

Answer 4

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