Help me please, помогите с заданиями,если можно,то с полным решением и объяснени...

katyazlatova @katyazlatova

May 2022 1 19 Report

Help me please, помогите с заданиями,если можно,то с полным решением и объяснением,а то не понимаю

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timofei9009900

Ответ:

${(2 + \sqrt{3} )}^{2} - 4(2 + \sqrt{3)} + 3 = \\ 4 + 4 \sqrt{3} + 3 - 8 - 4 \sqrt{3} + 3 = 2$

$\frac{x + 2}{2(x - 4)} \times \frac{96}{x(x + 2)} = \frac{96(x + 2)}{2x(x - 4)(x +2)}$

$\frac{3x}{x - 4} - \frac{96(x + 2)}{2x(x - 4)(x +2)} = \\ \frac{3x \times 2x(x + 2) - 96(x + 2)}{2x(x - 4)(x + 2)} = \\ \frac{(6 {x}^{2} - 96) (x + 2)}{2x(x - 4)(x + 2)} = \\ \frac{6(x + 4)(x - 4)}{2x(x - 4)} = \frac{3(x + 4)}{x}$

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