Question

Resolva a A bhaskara de raiz quadrada de 7x-3-1=x

Answer 1

Resposta:

7x−3−1=x7x−3=x+1(7x−3)2=(x+1)27x−3=x2+2x+1x2+2x+1−7x+3=0x2−5x+4=0Δ=25−16Δ=9 x=25±3x=4 ou x=1

s=(1,4)