andr8aa
25.11.2021 •
Mathematics
Which of the following is a perfect square trinomial?
A. x²-6x+9
B. 4x²-20x-25
C. 4x²+20xy+9y2
D. 9a²-6a²bc+a²b²c²
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Ответ:
Ответ:
Ответ:
P=6/25 x 100% = 24%