5. What must be added to x + 2x - 2x + x -1. So that result is exactly divisible by x + x -2?
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Step-by-step explanation:
x+2x-2x+x-1=2x-1
the remainder must be 0 when divisible by x+x-2=2x-2
therefore -1 must be added to 2x-1 to get completely divisible by 2x-2
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