Question

Vă rog urgent!!!!... ​

Answer 1

Răspuns:

Explicație pas cu pas:

1. 2√3+5√3-3√3=7√3-3√3=4√3

2. 15+10√3-10√3=15

3. =5-3=2

4.=9+6√5+5=14+6√5

5.=3-2√3+1=4-2√3

6. = 1+5+25=31

7. =25-1/4=(100-1)/4=99/4

8.(1/5+1/2)·20/7=(2+5)/10·20/7=7·2/7=2

9. (4-3)/12:1/12=1/12·12=1