Ответ:
x+3\x^2+9(x-3+x+3)
x+3\x^2+9(x-x)
x+3\x^2+9*2x
x+3\x^2+18x
19x+3\x^2
19x^3+3\x^2
Объяснение:
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Ответ:
x+3\x^2+9(x-3+x+3)
x+3\x^2+9(x-x)
x+3\x^2+9*2x
x+3\x^2+18x
19x+3\x^2
19x^3+3\x^2
19x^3+3\x^2
Объяснение: