va rog ex 22. 23. Dau coroana! Please​

Explicație pas cu pas:

22. 1) a\3=b\2 putem scrie ca:

2a=3b |×7

14a=21b

2) (14a-21b+1)^2013=1

14a=21b atunci:

1^2013=1 (A)

23. Amlific cu numarul de la numitor

(2a+3b-5c)^2013=0

0^2013=0 (A)

[tex]22. \: \: \frac{a}{2} = \frac{b}{3} [/tex]

[tex]a \times 3 = 2 \times b[/tex]

[tex](14 a - 21b + 1)^{2013} = 1[/tex]

[tex](14a - 7 \times 3b + 1)^{2013} = 1[/tex]

[tex](14a - 14a + 1)^{2013} = 1[/tex]

[tex](0 + 1)^{2013} = 1[/tex]

[tex]{1}^{2013} = 1[/tex]

[tex]23. \: \: \frac{a}{2} = \frac{b}{3} = \frac{c}{5} = k[/tex]

[tex]a = 2k \\ b = 3k \\ c = 5k[/tex]

[tex](a + b - c)^{2013} = 1[/tex]

[tex](2k + 3k - 5k)^{2013} = 1[/tex]

[tex] {0}^{2013} = 1[/tex]