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Zarrin [17]
3 years ago
11

Complete the square to form a perfect-square trinomial x^2-4x+

Mathematics
1 answer:
nadya68 [22]3 years ago
8 0
x^2-4x=x^2-4x+(4-4)\\=(x^2-4x+4)-4\\=(x-2)^2-4

We are done 
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