Question

AYUDA
3 √x + 5 = 20
3√x + 25 – 4 = 1
6 + √5x + 1 = 15

Answer 1

Respuesta:

Explicación paso a paso:

3√x + 5 = 20

3√x = 20 - 5

3√x = 15

√x = 15 / 3

√x = 5

(√x)^2 = (5)^2

x = 25

3√x + 25 - 4 = 1

3√x + 21 = 1

3√x = 1 - 21

3√x = - 20

√x = (- 20 / 3)

(√x)^2 = (- 20 / 3)^2

x = 400 / 9

6 + √5x + 1 = 15

7 + √5x = 15

√5x = 15 - 7

√5x = 8

(√5x)^2 = (8)^2

5x = 64

x = 64 / 5