Question

× elevado a 2= 12(×-3)​

Answer 1

Resposta:

${x}^{2} = 12(x - 3) \\ {x}^{2} = 12x - 36 \\ {x}^{2} - 12x + 36 = 0 \\ a = 1 \\ b = - 12 \\ c = 36 \\ x = \frac{ - ( - 12) \frac{ + }{ - } \sqrt{ ( { - 12}^{2} )} - 4(1)(36)}{2} \\ x = \frac{12 \frac{ + }{ - } \sqrt{144} - 144}{2} \\ x = \frac{12 \frac{ + }{ - } \sqrt{0} }{2} \\ x = \frac{12 \frac{ + }{ - }0 }{2} \\ {x}^{1} = {x}^{2} = \frac{12}{2} = 6$