1)|x-2|=2-x решите плиз 2)|7x+4|<=8+2x

Question

1)|x-2|=2-x решите плиз

2)|7x+4|<=8+2x</span>

Answer 1

1) |x-2|=2-x;  х-2=2-х;  х+х=2+2;  2х=4;  х=2.

2) |7x+4|<=8+2x;  7х+4<=8+2х;  7х-2х<=8-4;  5х<= 4;  х<= 4/5.</p>

Answer 2

|x-2|=2-x 

х-2=2-х

2х=4

х=2

-х+2=2+х

-2х=0

х=0

Ответы: 2 и 0

| 7x+4|<=8+2x</span>

7х+4<=8+2х             </span>

5х<=4</span>

х<=0.8</span>

-7х-4<=8-2х</span>

-5х<=12    </span>

х>=-2.4

Ответы: [-2.4;0.8]