Question

4x2-1=1 16


83x+2=1​

1000x+1=0,01-2x+1

Answer 1

Resposta:

Explicação passo-a-passo:

$4x^2-1=116\\4x^2=116+1\\4x^2=115\\x^2=\frac{115}{4}\\x=^+_-\sqrt{\frac{115}{4}}\\x=^+_-\frac{\sqrt{115}}{2}$

$83x+2=1\\83x=1-2\\83x=-1\\x=-\frac{1}{83}$

$1000x+1=\frac{1}{100}-2x+1\\\\1000x+2x=\frac{1}{100}+1\\\\102x=\frac{101}{100}\\\\x=\frac{\frac{101}{100}}{102}=\frac{101}{100}*\frac{1}{102}=\frac{101}{10200}$