Question

[X-1]+2=4. PORFAVOR!!!!!!!!!! La [ ] significa raiz pero no encontre la tecla de raíz.

Answer 1

√x-1 + 2 = 4
√x-1 = 4 - 2
√x-1= 2
x-1= 2²
x-1 = 4
x = 4 +1
x = 5

Comprobamos:
√x-1 + 2 = 4
√5-1 + 2 = 4
√4 + 2 = 4
2 + 2 = 4
4 = 4