Question

cel mai mare nr intreg pt care 2x-1|27 este?

Answer 1

Scz e gresit in poza
D27 = ±1,±3,±9,±27
2x - 1 = 1
2x = 2
x = 1
2x - 1 = -1
2x = 0
x = 0

2x - 1 = 3
2x = 4
x = 2
2x - 1 = -3
2x = -2
x = -1

2x - 1 = 9
2x = 10
x = 5
2x - 1 = -9
2x = -8
x = -4

2x - 1 = 27
2x = 28
x = 14
2x - 1 = -27
2x = -26
x = -13.
x { -1,0,1,2,5,-4, 14,-13} .............................

Answer 2

$2x-1|27=\textgreater 2x-1\in D_{27}$

$D_{27}=\{1,3,9,27\}$

$2x-1 \in \{1,3,9,27\}|+1$

$2x \in \{2,4,10,28\}|:2$

$x \in \{1,2,5,14\}=\textgreater cea \ mai \ mare \ valoare \ a \ lui \ x \ este \ 14.$