Question

Qual o produto de (2x - 2) . (x - 2) =

Answer 1

2x²-4x-2x+4

2x²-6x+4

∆=(-6)²-4.2.4

∆=36-32

∆=4

-6±✓4

---------

2.2

-6±2

----------

4

x'-6+2 4

----------= --- =1

4 4

x"=-6-2 -8

----------- --- =-2

4 4