Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

Derivation

8 == 2*x^2

⇒ algebra.equations.coverup.times

4 == x^2

⇒ algebra.equations.coverup.power

2 == x or -2 == x

⇒ algebra.equations.linear.flip

x == 2 or -2 == x

⇒ algebra.equations.linear.flip

x == 2 or x == -2