Exercise algebra.equations.quadratic.no-abc

Description
solve a quadratic equation without abc-formula

Derivation

11-(2*x+1)^2 == 5

⇒ algebra.equations.coverup.onevar.minus-right

(2*x+1)^2 == 6

⇒ algebra.equations.coverup.power

2*x+1 == sqrt 6 or 2*x+1 == -sqrt 6

⇒ algebra.equations.coverup.onevar.plus

2*x == -1+sqrt 6 or 2*x+1 == -sqrt 6

⇒ algebra.equations.coverup.times

x == (-1+sqrt 6)/2 or 2*x+1 == -sqrt 6

⇒ algebra.equations.coverup.onevar.plus

x == (-1+sqrt 6)/2 or 2*x == -1-sqrt 6

⇒ algebra.equations.coverup.times

x == (-1+sqrt 6)/2 or x == (-1-sqrt 6)/2

⇒ algebra.equations.quadratic.distr-div

x == -1/2+sqrt 6/2 or x == -1/2-sqrt 6/2