[เด็กมาใหม่]

$$\frac{4}{1+\sqrt{2}+\sqrt{3}}+\sqrt{6}=x$$
$$2+[\sqrt{2}][\sqrt{2}]+[\sqrt{3}][\sqrt{2}]+3\sqrt{2}+2\sqrt{3}=x[1+\sqrt{2}+\sqrt{3}]$$
$$[2+\sqrt{2}]+[\sqrt{2}][\sqrt{2}]+[2\sqrt{2}]+[\sqrt{3}][\sqrt{2}]+2\sqrt{3}=x[1+\sqrt{2}+\sqrt{3}]$$
$$[2+\sqrt{2}][1+\sqrt{2}+\sqrt{3}]=x[1+\sqrt{2}+\sqrt{3}]$$
$$x=2+\sqrt{2}$$
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เปนงงกะการไช้ลาเท็กจิงๆ[ก็เพิ่งไช้ครั้งเเรกนี่เเหละ]