SOLUTION: 4x(x-5)-5x(x-4)=-1
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Question 408339: 4x(x-5)-5x(x-4)=-1
Answer by clarkp(14) (Show Source): You can put this solution on YOUR website!
4x²- 20x-5x²+ 20 =-1 BY associative property
-x²+0= -1 combine like terms
-x²=-1 by identity property of addition
x²=1 by inverse property of multiplication
therefore x= -1 or x= 1
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