По-моему так, но я не уверена
<span> x-4(9-x)=3x+2
х-36+4х=3х+2
х+4х-3х=2+36
2х=38
х=38:2
<u>х=19</u></span>
Исправьте ошибки в условии!
<span>5 ∙ 4 + 6 ∙ 4 = 4 </span>· (5 + 6) = 4 · 11 = 44<span>
5 ∙ (-4) + 6 ∙ (-4) = -4 </span>· (5 + 6) = -4 · 11 = -44<span>
5 ∙ 4 - 6 ∙ 4 = 4 </span>· (5 - 6) = 4 · (-1) = -4<span>
5 ∙ (-4) - 6 ∙ (-4) = -4 </span>· (5 - 6) = -4 · (-1) = 4<span>
-5 ∙ 4 + 6 ∙ 4 = 4 </span>· (-5 + 6) = 4 · 1 = 4<span>
-5 ∙ (-4) + 6 ∙ (-4) = (-4) </span>· (-5 + 6) = -4 · 1 = -4<span>
-5 ∙ 4 - 6 ∙ 4 = 4 </span>· (-5 - 6) = 4 · <span>(-11) = -44</span><span>
-5 ∙ (-4) - 6 ∙ (-4) = -4 </span>· (-5 - 6) = -4 · (-11) = 44
Х2<span> + 12</span>х<span> + 36 = 0</span>
(х+6)2₂<span> = 0</span>
х+6 = 0
х<span> = -6
вроде правильно.
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