Exercise algebra.equations.quadratic.no-abc
Description
solve a quadratic equation without abc-formula
Derivation
121/4 == (x-1/2)^2
⇒ algebra.equations.coverup.power11/2 == x-1/2 or -11/2 == x-1/2
⇒ algebra.equations.coverup.onevar.minus-left6 == x or -11/2 == x-1/2
⇒ algebra.equations.coverup.onevar.minus-left6 == x or -5 == x
⇒ algebra.equations.linear.flipx == 6 or -5 == x
⇒ algebra.equations.linear.flipx == 6 or x == -5