SOLUTION: I need help solving quadratic equations by factoring. The question I need help on is not listed in my book. {{{x^2-4x=5}}}

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Question 72881This question is from textbook College Algebra
: I need help solving quadratic equations by factoring. The question I need help on is not listed in my book. x%5E2-4x=5 This question is from textbook College Algebra

Answer by checkley75(3666) About Me  (Show Source):
You can put this solution on YOUR website!
X^2-4X=5
X^2-4X-5=0
(X-5)(X+1)=0 [IF YOU MULTIPLY THESE TWO TERMS YOU GET (X^2-5X+X-5) NOW COMBINING LIKE TERMS YOU GET X^2-4X-5. THE 4X DIDNT DISAPPEAR IT JUST GOT FACTORED INTO (-5X & X WHICH = 4X)
X-5=0
X=5 ANSWER.
X+1=0
X=-1 ANSWER.