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OpenStudy (nbarrera):
Can someone PLEASE HELP ME! What number should be added to the expression x2 + 2x to change it into a perfect square trinomial? A 4 B 2 C 1 D 3
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OpenStudy (arthur_ser):
\[x^2 +2x+1 =(x+1)^2\] It's C
OpenStudy (nbarrera):
Thx so much
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