Question

Determine as raizes da equação (x+4)(x-2^8)=0

Answer 1

(x+4).(x-2^8)=> 0

(x+4).(x-256)=> 0


x²-256x+4x-1024=>0

x²-252x-1024=0


↓ DELTA ↓


(252)²-4.1.(-1024)

63504+4096

∆:.√67.600

∆=>{260}




↓RAÍZES↓

-(-252)±260/2.1


X'=>(252+260)/2=>512/2=> (256)


X"=>(252-260)/2=> -8/2=> (-4)


S:. {-4 e 256}