middle term of x(x+3)(x+6)(x+9)+56
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Answer:
(x2+9x+4)⋅(x+2)⋅(x+7)
Step-by-step explanation:
(x2+9x+4)⋅(x+2)⋅(x+7)
(x • (x + 3) • (x + 6) • (x + 9)) + 56
x • (x + 3) • (x + 6) • (x + 9) + 56
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