Question

Tính :

1) ( 3x + 1 )( 3x - 1 )

2) ( 3x² - y )( 3x² + y )

3) ( 5x - 3/2 )( 5x + 3/2 )

4) ( x - 1 )( x² + x + 1 )

5) ( x² - 2 )( x⁴ + 2x² + 4 )

6) ( x + 4 )( x² - 4x + 16 )

7) ( 3x + 2 )( 9x² - 6x + 4 )

8) ( x - 4 )( x² + 4x + 16 )

9) ( x - 1/3 )( x² + x/3 + 1/9 )

10) ( x + 1/3 )( x² - 1/3x + 1/9 )

CÁC BẠN GIẢI NHANH CHO MÌNH NHA. BẠN NÀO GIẢI NHANH , ĐÚNG MÌNH TICK CHO

Answer 1

1) \(=9x^2-1\)

2) \(=9x^4-y^2\)

3)\(=25x^2-\dfrac{9}{4}\)

4) \(=x^3-1\)

5) \(=x^6-8\)

6) \(=x^3-64\)

7) \(=27x^3+8\)

8) \(=x^3-64\)

9) \(=x^3-\dfrac{1}{27}\)

10) \(x^3+\dfrac{1}{27}\)