Expression 35981

I think the number is when you substitute it in the expression (x-4). (2x-1), you get zero. What number can it be?

Correct answer:

x1 =  4
x2 =  0.5

Step-by-step explanation:

x14=0  x1=4  x1=14=4  x1=4
2 x21=0  2x2=1  x2=21=0.5  x2=21=0.5

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