問題文全文(内容文)：
$a^2\left(b+1\right)^2+2a\left(b^2-a\right)+b\left(b-2a^2\right)\;$を因数分解せよ。

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)：
$\sqrt{\sqrt{90 - \sqrt{81}} + \sqrt{240 + \sqrt{256}}}$
を計算せよ。

問題文全文(内容文)：
2点$A,C$を通る直線の式を求めなさい.

宮城県高校過去問

問題文全文(内容文)：
放物線上の2点を通る直線
動画内の図の接点の傾きと切片の求め方解説動画です。