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Salsk061 [2.6K]
3 years ago
11

Which number completes the square? x^2-4x?

Mathematics
1 answer:
ruslelena [56]3 years ago
4 0
X^2-4x=0 Let x=0 0^2=4(0)=0 0=0 [checks out] and x^2-4x=0 (4)^2-4(4)x=0 16-16=0 0=0 [also checks out]
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