SOLUTION: I am having trouble solving this equation: (x+5)(x-4)=4. It is a multiple choice question and the answer I got is not one of the options.
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Question 665758: I am having trouble solving this equation: (x+5)(x-4)=4. It is a multiple choice question and the answer I got is not one of the options. Answer by lynnlo(4176) (Show Source):
You can put this solution on YOUR website! (x+5)(x-4)=4
(x-4)(x+5)=4
x^2+x-20=4
x^2+x=24
x^2+x+1/4=97/4
(x+1/2)^2=97/4
x+1/2=√97/2,x+1/2=-√97/2
x=√97/2-1/2,x+1/2=-√97/2
x=√97/2-1/2,x=-1/2-√97/2
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