Question

 Điền vào chỗ trống cho thích hợp:

a) \(x^3+12x^2+48x+64=\) ......

b) \(x^2+2x+1=\) ......

c) \(x^2-1=\) ......

d) \(x^2+6x+9=\) .......

e) \(4x^2-9=\) ....... 

Answer 1

\(a,=\left(x+4\right)^3\\ b,=\left(x+1\right)^2\\ c,=\left(x-1\right)\left(x+1\right)\\ d,=\left(x+3\right)^2\\ e,=\left(2x-3\right)\left(2x+3\right)\)

Answer 2

a) `(x+4)^3`

b) `(x+1)^2`

c) `(x+1)(x-1)`

d) `(x+3)^2`

e) `(2x-3)(2x+3)`

Answer 3

a,=(x+4)3b,=(x+1)2c,=(x−1)(x+1)d,=(x+3)2e,=(2x−3)(2x+3)