問題文全文(内容文)：
円の面積=?
＊図は動画内参照

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)：
$x^2+x-1=0$の大きい方の解を$a$とし,小さい方の解を$b$とする.
$\dfrac{1}{(a+1)^2}+\dfrac{1}{(b+1)^2}$の値を求めよ.

問題文全文(内容文)：
$xの方程式 \ kx^2-6x+1=0の解の個数が1個となるようなkの値を2個求めよ。$