問題文全文(内容文)：
因数分解せよ
$x^2-y^2+4y-4$=

2022早稲田佐賀高等学校

問題文全文(内容文)：
$\sqrt{15}+\sqrt{10}\;$の整数部分を$a$、小数部分を$b$とおいたとき、
$b^2-2\sqrt{15}b+14\sqrt{10}\;$の値を求めよ。

問題文全文(内容文)：
正八角形の面積=?
＊図は動画内参照

2021中央大学附属横浜高等学校

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)：
$(\frac{\sqrt 5 + \sqrt 3}{\sqrt 2})^2
+(\frac{\sqrt 5 + \sqrt 3}{\sqrt 2})(\frac{\sqrt 5 - \sqrt 3}{\sqrt 2})
-(\frac{\sqrt 5 - \sqrt 3}{\sqrt 2})^2
$
2022都立国立高等学校