SOLUTION: {{{21n^2-28n-28=0}}} I do not understand how to solve.

SOLUTION: {{{21n^2-28n-28=0}}} I do not understand how to solve.

Algebra.Com

Question 898711:
I do not understand how to solve.
Answer by Jc0110(165) (Show Source): You can put this solution on YOUR website!
... The whole equation can be simplified by dividing 7.
... This quadratic equation can be solved by using 3 methods, which are Factorization, Quadratic formula or Completing the Square.
Factorization method is being used here.

or
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