Question

A) x²+2x+1=6
B) x²+2×+1=6
Pfv ajuda aí galera

Answer 1

Resposta: S= {1-√6, 1+√6}

Explicação passo-a-passo:

X²+2x+1=6

X²+2x+1-6=0

X²+2x-5=0

X=-b±√b²-4ac/2a

X= -2±√2²-4.1.(-5)/2.1

X= -2±√4+20/2

X= -2±√24/2

X= -2±2√6/2

X'= -2+2√6/2

X'= -1+√6

X"= -2-2√6/2

X"= 1-√6