Question

http://olm.vn/hoi-dap/question/175513.html

Answer 1

\(\left(5-3x\right)^3-\left(x+8\right)\left(x-8\right)+\left(3-x\right)^2\)

\(=\left(125-225x+135x^2-27x^3\right)-\left(x^2-64\right)+\left(9-6x+x^2\right)\)

\(=125-225x+135x^2-27x^3-x^2+64+9-6x+x^2\)

\(=-27x^3+135x^2-231x+198\)

Answer 2

xin lỗi, hiểu lầm, tại bạn ko ghi rõ