emily200705
03.07.2019 •
Mathematics
What is the coefficient of the second term of the trinomial? (3x+3)2=9x2+bx+9 enter your answer in the box. b = ?
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Ответ:
(3x+3)^2
(3x+3) * (3x+3)
FOIL
3x*3x +3x*3 +3x*3 +3*3
9x^2 +9x+9x+9
9x^2 +18x+9
B=18
Ответ: