Simplify the following expressions without using calculator 8/(2sqrt(6) + 3) – 4/(2sqrt(6) -3)​

Question

Simplify the following expressions without using calculator 8/(2sqrt(6) + 3) – 4/(2sqrt(6) -3)​

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Vodka 4 years 2021-08-16T20:40:10+00:00 1 Answers 7 views 0

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  1. ngockhue
    0
    2021-08-16T20:41:19+00:00
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    Step-by-step explanation:

    \tt \longrightarrow \dfrac{8}{2 \sqrt{6} + 3 } - \dfrac{4}{2 \sqrt{6} - 3 } \\ \\ \tt \longrightarrow \dfrac{8(2 \sqrt{6} - 3) - 4(2 \sqrt{6} + 3)}{(2 \sqrt{6} + 3)(2 \sqrt{6} - 3 ) } \\ \\ \tt \longrightarrow \dfrac{16\sqrt{6} - 24 - 8 \sqrt{6} - 12}{(2 \sqrt{6} ) {}^{2} - (3) {}^{2} } \\ \\ \tt \longrightarrow \dfrac{8\sqrt{6} - 36}{24 - 9 } \\ \\ \tt \green{\longrightarrow \dfrac{8\sqrt{6} - 36}{15 }}

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )