Question

khai triển hằng đẳng thức 

(x -2)^3 =?

Answer 1

(x-2)^3=x³-6x²+12x-8

Answer 2

\(\left(x-2\right)^3=x^3-3\cdot x^2\cdot2+3\cdot x\cdot2^2-2^3\)

\(=x^3-6x^2+12x-8\)

Answer 3

\(\left(x-2\right)^3\)
\(=x^3-3.x^2.2+3.x.2^2-2^3\)
\(=x^3-6x^2+12x-8\)

Answer 4

(x − 2) ³

= x ³ − 3.x 2 .2 + 3.x.2² − 2 ³

= x³− 6x 2 + 12x − 8