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postnew [5]
2 years ago
6

What number must you add to complete the square? x^2 +4 =23A. 4B. 8C. 16D. 2

Mathematics
1 answer:
Alex_Xolod [135]2 years ago
8 0
A. 4 

to complete the square, take half of the the second number and square it
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