Question

ex: 9,10,11, multumesc

Answer 1

9.

a) √484/√1089 ×(-3²)+1=22/33×9+1=198/33+1/1=(198+33)/33=231/33=7

b) √2601/34×1/√16= 51/34×1/4=51/136

c) √2116/23×(1/-2)²+(-1/2)¹=46/23×1/4-1/2=2×1/4-1/2=2/4-1/2=2/4-2/4=0

d) =√9+16+9×16=√25+144=√169=13

e) =√175-6=√169=13

f) = 56/7÷16-1/2=8/16-1/2=8/16-8/16=0

g) = (-4/3)³×1/8+1/9=-64/27×1/8+1/9=-64/216+1/9=-64+24/216=-40/216=-10/54=-5/27

10. a) √8/√2=x+3/√144

2√2/√2=x+3/12

2/1=x+3/12

x+3=24

x=21

b) 0,25+2(1/8)= 25/100+17/8=50/200+425/200=475/200

475/200×32/19=15200/3800=4

Deci 4/3=9/2(x+2), 4/3=9/2x+2

8x+8=27

8x=19

x=19/8

11. a) = √87÷3-25=√29-25=√4=2

b) √5√5√5√25 +√15625

=√5√5√25 + 125

= √5√25 + 125

√25 + 125

5+125=130

130/13=10

10-√100=10-10=0

c) =(((√625)+27)/26)-2=(25+27)/26)-2=52/26-2=2-2=0