Question

resolva a equacao x²-5x+6=0​

Answer 1

Resposta:

s={2; 3}

Explicação passo-a-passo:

${x}^{2} - 5x + 6 = 0 \\ a = 1 \\ b = - 5 \\ c = 6 \\ delta = {b}^{2} - 4ac \\ delta = {( - 5)}^{2} - 4 \times 1 \times 6 \\ delta = 25 - 24 \\ delta = 1 \\ x = \frac{ - b \binom{ + }{ - } \sqrt{delta} }{2a} \\ x = \frac{ - ( - 5) \binom{ + }{ - } \sqrt{1} }{2 \times 1} \\ x = \frac{5 \binom{ + }{ - } 1}{2} \\ {x}^{i} = \frac{5 + 1}{2} = \frac{6}{2} = 3 \\ {x}^{ii} = \frac{5 - 1}{2} = \frac{4}{2} = 2$