Question

Khai triển biểu thức: (x²+2)²

Answer 1

\(\left(x^2+2\right)^2\)

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

\(=x^4+4x^2+4\)

Answer 2

(x^2+2)^2= x^4++4x^2+4