Question

ecuaciones
a) 3x+10=46
b)2x+3x=40
c)3x-1/2x=5
d)X²=121

Answer 1

Resolver.
3x + 10 = 46
3x = 46 - 10
3x = 36
x = 36/3
x = 12
--------------------------------
2x + 3x = 40
5x = 40
x = 40/5
x = 8
-----------------------------------
3x - x/2 = 5
6x/2 - x/2 = 5
(6x - x)/2 = 5
5x/2 = 5
5x = 5*2
x = 10/5
x = 2
------------------------------------------------
x² = 121
x = √ 121  Tiene dos soluciones reales
x = 11        Porque (11)(11) = 121
  o
x = - √121
x = - 11    Porque (- 11( - 11) = 121

Solucion (11 , -11)