Предмет: Алгебра, автор: olazaharova055

5. Розв'яжіть рiвняння (х - 5)² - 5 = 4(4-x) + 4. Помогите пожалуйстаааааа, либо я завтра умруууууу

Ответы

Автор ответа: Universalka

0

$\displaystyle\bf\\(x-5) ^{2}-5 =4(4-x)+4\\\\x^{2} -2\cdot x\cdot 5+5^{2}-5=4\cdot 4-4\cdot x+4\\\\x^{2} -10x+25-5=16-4x+4\\\\x^{2} -10x+20=20-4x\\\\x^{2} -10x+20-20+4x=0\\\\x^{2} -6x=0\\\\x\cdot(x-6)=0\\\\x_{1} =0\\\\x-6=0 \ \ \ \Rightarrow \ \ \ x_{2} =6\\\\Otvet \ : \ 0 \ ; \ 6$

Universalka: Никогда не пишите такие страшные слова ( про умру) .

olazaharova055: ахахахах хорошо мой повелитель

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