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Two perpendicular lines are tangential to two identical circles that touch. What is the largest circle that can be placed in between the two lines and the two circles and how would you construct it?

Good Approximations

Solve quadratic equations and use continued fractions to find rational approximations to irrational numbers.

Target Six

Show that x = 1 is a solution of the equation x^(3/2) - 8x^(-3/2) = 7 and find all other solutions.

Quad Solve

Age 16 to 18 Short
Challenge Level
To do this problem you will need to know that $a^0 = 1$ when $a\neq 0$ and $1^b=1$ for any $b$ along with other power manipulations which are needed from the beginning of C1.
Note that $0^0$ is not defined as a number.
You will also need to know the formula for the solution of a quadratic equation.
If you are studying complex numbers then you can also bring those ideas into the problem if desired.