Question

Urgente !!! Poderiam me ajudar??

Answer 1

Resposta:

Explicação passo a passo:

a.

Vx+2=7

(Vx+2)²=7²

x+2=49

x=49-2

x=47

b.

V3x+10=4

(V3x+10)²=4²

3x+10=16

3x=16-10

3x=6

x=6/3

x=2

c.

Vx-2 -5=0

Vx-2=0+5

Vx-2=5

(Vx-2)²=5²

x-2=25

x=25+2

x=27

d.

V5x-10=V3x+2

5x-10=3x+2

5x-3x=2+10

2x=12

x=12/2

x=6

e.

Vx-3 = 2V5

(Vx-3)² (2V5)²

x-3=4.5

x-3=20

x=20+3

x=23

f.

³V1-3x =-1

(³V1-3x)³=(-1)³

1-3x=-1

-3x=-1-1

-3x=-2 (-1)

3x=2

x=2/3

g.

3V3x-2= 2V5x-1

(3V3x-2)²=(2V5x-1)²

9.(3x-2)= 4.(5x-1)

27x-18=20x-4

27x-20x=-4+18

7x=14

x=14/7

x=2