Question

Fatore as expressões:
1) x² - 16 =

2) 9a² - b² =

3) 25 - 4y² =

4) 100 - x⁴ =

5) 36x⁶ - 49y¹⁰ =

6) x¹⁴ - 1 =

7) x² - y⁴ =

8) 81 - b⁶ =

9) 121 - 4y⁸ =

10) 169 - 144x¹⁸ =

Answer 1

1) x² - 16 =. (x+4).(x-4)

2) 9a² - b² = (3a+b).(3a-b)

3) 25 - 4y² =(5+2y).(5-2y)

4) 100 - x⁴ = (10+x²).(10-x²)

5) 36x⁶ - 49y¹⁰ = (6x³+7y⁵).(6x³-7y⁵)

6) x¹⁴ - 1 = (x⁷+1).(x⁷-1)

7) x² - y⁴ = (x+y²).(x-y²)

8) 81 - b⁶ = (9+b³).(9-b³)

9) 121 - 4y⁸ = ( 11+2y⁴).(11 -2y⁴)

10) 169 - 144x¹⁸ = (13+12x⁹).(13-12x⁹)