Question

Решите пример (x- 2)^2 + 5(16-3x) = 0

Answer 1

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Answer 2

(x - 2)² + 5(16 - 3x) = 0

x² - 4x + 4 + 80 - 15x = 0

x² - 19x + 84 = 0

D = (- 19)² - 4 * 84 = 361 - 336 = 25 = 5²

$x_{1}=\frac{19+5}{2}=12\\\\x_{2} =\frac{19-5}{2}=7$

Ответ : 7 ; 12