Автор - Andrejvich

Первое задание. Помогите аж

Ответ

Автор - dmdm15
а)(√x + 2√3) / (x - 12) = (√x + √12) / (√x + 12)(√x - 12) = 1 / (√x - 12)
б)(
√7a + √14b) / (a + 2√2ab + 2b) = √7(a + 2b) / (√a + √2b)^2 = √7 / (√a + 2b)

Ответ

Автор - JuliaKovalchook
 frac{ sqrt{x} +2 sqrt{3} }{x-12} = frac{ sqrt{x} + sqrt{12} }{x-12} = frac{ sqrt{x} + sqrt{12} }{(sqrt{x} - sqrt{12})(sqrt{x} + sqrt{12})} = frac{1}{sqrt{x} - sqrt{12} }
 frac{ sqrt{7a}- sqrt{14b}  }{a+2 sqrt{2ab} +2b} = frac{ sqrt{7}* sqrt{a} - sqrt{7}*sqrt{2b}  }{a+ sqrt{8ab} +2b} = frac{ sqrt{7a} ( sqrt{a} - sqrt{2b)}  }{( sqrt{a}+ sqrt{2b} )^{2} }  = frac{ sqrt{7a}    }{sqrt{a}+ sqrt{2b}  }  =

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