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OpenStudy (anonymous):
Fan and Medal What number should be added to the expression x^2 + 10x to change it into a perfect square trinomial? A. 5 B. 10 C. 25 D. 100
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OpenStudy (anonymous):
@aajugdar
OpenStudy (anonymous):
25 :)
OpenStudy (anonymous):
x^2+2*5x+25 = x^2+2*5x+5^2 = (x+5)^2
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