Question

Determine o valor de x
A) 2x + 5 = x -3
B) (x + 3)X5=50
C) 2x2 +4x – 6 = 0
D) -x2 + 3x = 0

Answer 1

Resposta:

a) 2x - x = -3 +5

x = +2

Answer 2

Resposta:

x' = -8

x'' = 7

x''' = 1/2

x"" = 0

Explicação passo-a-passo:

2x + 5 = x - 3

2x - x = -5 -3

x = -8

(x + 3)5 = 50

5x + 15 = 50

5x = 35

x = 7

2.2 + 4x - 6 = 0

4 + 4x = 6

4x = 2

$x = \frac{2}{4} \\ x = \frac{1}{2}$

-2x + 3x = 0

x = 0