Worth 30 points give the whole answers.
1. (2r + 9)(2r-9) + (2r - 9)^2
2. 12 - 5...
![Mathematics](/tpl/images/cats/mat.png)
Mathematics, 20.01.2020 19:31, NetherisIsTheQueen
Worth 30 points give the whole answers.
1. (2r + 9)(2r-9) + (2r - 9)^2
2. 12 - 5 [ ( a^3 + a^2 - a ) / a] + 5a
3. x^4 + 7 is divided by x - 3. long division
![answer](/tpl/images/cats/otvet.png)
Answers: 2
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