Question

bardzo prosze o rozwiązanie. (zadania w załączniku) na samym początku - pod pierwiastkiem jest 2 i 1/4 . ;)

Answer 1

Zad.1

V2 1/4 -(-1 2/3)^2:2,4/(6-4 *2 1/4)*(1/3)^2 =

=V9/4 -(-5/3)^2:24/10 /(6-4 * 9/4) * 1/9 =

=3/2-25/9:12/5 /(6-9) * 1/9 =

=3/2-25/9 * 5 /12 /(-3) *1/9 =

=3/2 -125/108 /(-3/9) =

=(162/108 -125/108) :(-1/3) =

=37/108 *(-3) =

= -111/108 =

= -1 1/36

Zad.2

5 1/4:14 +7 1/2 *4 /(36:21/50 -75 3/14):3 =

=21/4 * 1/14 +15/2 *4 /(36 *50/21 -75 3/4):3 =

=3/8 +30 /(12 * 50/7 -75 3/14):3 =

=243/8 /(600/7 -75 3/4):3 =

=243/8 /(85 5/7 -75 3/14):3 =

=243/8 /(85 10/14 -75 3/14):3 =

=243/8 :(10 7/14):3 =

=243/8:147/14 * 1/3 =

=243/8:147/42 =

=243/8 * 42/147 =

=5103/588 =

=8 399/588 =

= 8 19/28

Zad.3

7/14 -1/2(2,7 * 5/27 -0,8):9-1/2)^3 =

=1/2 -1/2(27/10 * 5/27 -8/10):(-1/8) =

=1/2 -1/2(1/2 -8/10):(-1/8) =

=1/2 -1/2(5/10 -8/10):(-1/8) =

=1/2 -1/2(-3/10):(-1/8) =

=1/2 +3/20 * (-8) =

= 1/2 -24/20 =

=1/2 -6/5 =

= 5/10 -12/10 =

= - 7/10 = -0,7

 

(^ do potęgi)