Question

Fatore cada uma as expressoes algebricas: por favor me ajudem
x^2 - 121

81 - q^2

4z^2 - 25

5x + 5z

Answer 1

Fatore cada uma as expressoes algebricas: por favor me ajudemx^2 - 121

x² - 121 = 0
x² = + 121
x = + √121                    fatorar 121| 11
                                                  11| 11
                                                     1/         = 121 = 11x11 = 11²
x = + √121 = √11.11 = √11² = 11 (elimina a √(raiz) com o (²)
x' = 11
x" = - 11

81 - q^2
81 - q² = 0
- q² = - 81
q² = (-)(-)81
q² = + 81                
q = + √81                            81| 3
                                           27| 3
                                            9| 3
                                            3| 3
                                             1/        = 81 = 3.3.3.3 = 3.2.3.2

q = + √81 = √3.3.3.3 = √3².3² = 3.3 = 9   (idem acima) 
q = + 3
q = - 3

4z^2 - 25
4z² - 25 = 0
4z² = 25
z² = 25/4

z = √25/4
            √25                               √25 = 5   e √4 = 2
z = + -------
            √4

             5
z = +   ------
             2

z' = 5/2
e
z" = - 5/2

5x + 5z
5(x + z) =