SOLUTION: Solve for x. 4x(x-5)-5x(x-4)=-1

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Question 331189: Solve for x. 4x(x-5)-5x(x-4)=-1
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
4x%28x-5%29-5x%28x-4%29=-1
4x%5E2+-+20x+-5x%5E2+%2B+20x+=+-1
-x%5E2+=+-1
x%5E2+=+1
x=1 and x= -1
Check your answers by pluggin in those 2 values for x, one at a time, and verifying the equality is 'true'