SOLUTION: Solve the following quadratic equations. 〖(x-4)〗^2=81 Using the quadratic formula, solve 3x^2+6x-21=0

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Question 1038302: Solve the following quadratic equations.
〖(x-4)〗^2=81






Using the quadratic formula, solve 3x^2+6x-21=0

Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
, both sides are squares. Nothing too complicated.




Easily simplified first:



Simplify from that.

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