問題文全文(内容文)：
Let's enjoy oriental mathematics for just a little while.
You will discover a cute world from mathematics.
Everyone in the world should love and be good at mathematics.

We are introducing the entrance exam questions for Japanese high schools.
It's an important issue for you to understand the basics of mathematics.
Would you like to solve this math problem and check out our commentary?

問題文全文(内容文)：
どの面も、5,6,7の長さの三角形でできている四面体の体積を求めよ

問題文全文(内容文)：
$x=\frac{\sqrt 2 -2}{2}$のとき
$x^2+2x+ \frac{1}{x+1} +1 =?$

2022立命館高等学校

問題文全文(内容文)：
1⃣下の図で、xの値を求めよう。
(1)(2)(3)(4)
2⃣次の長さを3辺とする三角形のうち、直角三角形はどれ？
㋐6㎝、8㎝、10㎝　　㋑7㎝、8㎝、12㎝　　㋒3㎝、4㎝、$\sqrt{7}$㎝
㋓$\sqrt{2}$㎝、$\sqrt{3}$㎝、2㎝

＊図は動画内参照

問題文全文(内容文)：
$\sqrt{\sqrt{(10-7\sqrt2)}^2-\sqrt{(7-5\sqrt2)^2}}$の値を求めよ.