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nikklg [1K]
3 years ago
5

What number should be added to the expression x^2+4x to change it into a perfect square trinomial?

Mathematics
2 answers:
sleet_krkn [62]3 years ago
8 0
4

x^2+4x+4=(x+2)^2
lys-0071 [83]3 years ago
4 0
X² + 4x + 4 = (x+2)²

Answer is 4.

Hope it helps!
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